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libSBML Python API
5.18.0
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libSBML Python API
5.18.0
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The Reaction structure provides a way to express which species act as reactants and which species act as products in a reaction. In a given reaction, references to those species acting as reactants and/or products are made using instances of SpeciesReference structures in a Reaction object's lists of reactants and products.
A species can occur more than once in the lists of reactants and products of a given Reaction instance. The effective stoichiometry for a species in a reaction is the sum of the stoichiometry values given on the SpeciesReference object in the list of products minus the sum of stoichiometry values given on the SpeciesReference objects in the list of reactants. A positive value indicates the species is effectively a product and a negative value indicates the species is effectively a reactant. SBML places no restrictions on the effective stoichiometry of a species in a reaction; for example, it can be zero. In the following SBML fragment, the two reactions have the same effective stoichiometry for all their species:
<reaction id='x'>
<listOfReactants>
<speciesReference species='a'/>
<speciesReference species='a'/>
<speciesReference species='b'/>
</listOfReactants>
<listOfProducts>
<speciesReference species='c'/>
<speciesReference species='b'/>
</listProducts>
</reaction>
<reaction id='y'>
<listOfReactants>
<speciesReference species='a' stoichiometry='2'/>
</listOfReactants>
<listOfProducts>
<speciesReference species='c'/>
</listProducts>
</reaction>The precise structure of SpeciesReference differs between SBML Level 2 and Level 3. We discuss the two variants in separate sections below.
The mandatory 'species' attribute of SpeciesReference must have as its value the identifier of an existing species defined in the enclosing Model. The species is thereby designated as a reactant or product in the reaction. Which one it is (i.e., reactant or product) is indicated by whether the SpeciesReference appears in the Reaction's 'reactant' or 'product' lists.
Product and reactant stoichiometries can be specified using either 'stoichiometry' or 'stoichiometryMath' in a SpeciesReference object. The 'stoichiometry' attribute is of type float and should contain values greater than 0 (false). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1.
For maximum interoperability, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal). When the stoichiometry is a rational number, or when it is a more complicated formula, 'stoichiometryMath' must be used. The MathML expression in 'stoichiometryMath' may also refer to identifiers of entities in a model (except reaction identifiers). However, the only species identifiers that can be used in 'stoichiometryMath' are those referenced in the Reaction list of reactants, products and modifiers.
The following is a simple example of a species reference for species X0, with stoichiometry 2, in a list of reactants within a reaction having the identifier J1:
<model>
...
<listOfReactions>
<reaction id='J1'>
<listOfReactants>
<speciesReference species='X0' stoichiometry='2'>
</listOfReactants>
...
</reaction>
...
</listOfReactions>
...
</model>The following is a more complex example of a species reference for species X0, with a stoichiometry formula consisting of the parameter x:
<model>
...
<listOfReactions>
<reaction id='J1'>
<listOfReactants>
<speciesReference species='X0'>
<stoichiometryMath>
<math xmlns='http://www.w3.org/1998/Math/MathML'>
<ci>x</ci>
</math>
</stoichiometryMath>
</speciesReference>
</listOfReactants>
...
</reaction>
...
</listOfReactions>
...
</model>In Level 2's definition of a reaction, the stoichiometry attribute of a SpeciesReference is actually a combination of two factors, the standard biochemical stoichiometry and a conversion factor that may be needed to translate the units of the species quantity to the units of the reaction rate. Unfortunately, Level 2 offers no direct way of decoupling these two factors, or for explicitly indicating the units. The only way to do it in Level 2 is to use the StoichiometryMath object associated with SpeciesReferences, and to reference SBML Parameter objects from within the StoichiometryMath formula. This works because Parameter offers a way to attach units to a numerical value, but the solution is indirect and awkward for something that should be a simple matter. Moreover, the question of how to properly encode stoichiometries in SBML reactions has caused much confusion among implementors of SBML software.
SBML Level 3 approaches this problem differently. It (1) extends the the use of the SpeciesReference identifier to represent the value of the 'stoichiometry' attribute, (2) makes the 'stoichiometry' attribute optional, (3) removes StoichiometryMath, and (4) adds a new 'constant' boolean attribute on SpeciesReference.
As in Level 2, the 'stoichiometry' attribute is of type float and should contain values greater than zero (0). A missing 'stoichiometry' implies that the stoichiometry is either unknown, or to be obtained from an external source, or determined by an InitialAssignment object or other SBML construct elsewhere in the model.
A species reference's stoichiometry is set by its 'stoichiometry' attribute exactly once. If the SpeciesReference object's 'constant' attribute has the value True, then the stoichiometry is fixed and cannot be changed except by an InitialAssignment object. These two methods of setting the stoichiometry (i.e., using 'stoichiometry' directly, or using InitialAssignment) differ in that the 'stoichiometry' attribute can only be set to a literal floating-point number, whereas InitialAssignment allows the value to be set using an arbitrary mathematical expression. (As an example, the approach could be used to set the stoichiometry to a rational number of the form p/q, where p and q are integers, something that is occasionally useful in the context of biochemical reaction networks.) If the species reference's 'constant' attribute has the value False, the species reference's value may be overridden by an InitialAssignment or changed by AssignmentRule or AlgebraicRule, and in addition, for simulation time t > 0, it may also be changed by a RateRule or Event objects. (However, some of these constructs are mutually exclusive; see the SBML Level 3 Core specifiation for more details.) It is not an error to define 'stoichiometry' on a species reference and also redefine the stoichiometry using an InitialAssignment, but the 'stoichiometry' attribute in that case is ignored.
The value of the 'id' attribute of a SpeciesReference can be used as the content of a <ci> element in MathML formulas elsewhere in the model. When the identifier appears in a MathML <ci> element, it represents the stoichiometry of the corresponding species in the reaction where the SpeciesReference object instance appears. More specifically, it represents the value of the 'stoichiometry' attribute on the SpeciesReference object.
In SBML Level 3, the unit of measurement associated with the value of a species' stoichiometry is always considered to be dimensionless. This has the following implications:
When a species reference's identifier appears in mathematical formulas elsewhere in the model, the unit associated with that value is dimensionless.
The units of the 'math' elements of AssignmentRule, InitialAssignment and EventAssignment objects setting the stoichiometry of the species reference should be dimensionless.
If a species reference's identifier is the subject of a RateRule, the unit associated with the RateRule object's value should be dimensionless/time, where time is the model-wide unit of time set on the Model object.
Public Member Functions | |
| def | __init__ (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | addCVTerm (self, term, newBag=False) |
| Adds a copy of the given CVTerm object to this SBML object. More... | |
| def | appendAnnotation (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | appendNotes (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | clone (self) |
| Creates and returns a deep copy of this SpeciesReference object. More... | |
| def | connectToChild (self) |
| def | createStoichiometryMath (self) |
| Creates a new, empty StoichiometryMath object, adds it to this SpeciesReference, and returns it. More... | |
| def | deleteDisabledPlugins (self, recursive=True) |
| Deletes all information stored in disabled plugins. More... | |
| def | disablePackage (self, pkgURI, pkgPrefix) |
| Disables the given SBML Level 3 package on this object. More... | |
| def | enablePackage (self, pkgURI, pkgPrefix, flag) |
| Enables or disables the given SBML Level 3 package on this object. More... | |
| def | getAncestorOfType (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | getAnnotation (self, args) |
| Returns the content of the 'annotation' subelement of this object as a tree of XMLNode objects. More... | |
| def | getAnnotationString (self, args) |
| Returns the content of the 'annotation' subelement of this object as a character string. More... | |
| def | getColumn (self) |
| Returns the column number where this object first appears in the XML representation of the SBML document. More... | |
| def | getConstant (self) |
| Get the value of the 'constant' attribute. More... | |
| def | getCVTerm (self, n) |
| Returns the nth CVTerm in the list of CVTerms of this SBML object. More... | |
| def | getCVTerms (self, args) |
| Returns a list of CVTerm objects in the annotations of this SBML object. More... | |
| def | getDenominator (self) |
| Get the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1. More... | |
| def | getDisabledPlugin (self, args) |
| Returns the nth disabled plug-in object (extension interface) for an SBML Level 3 package extension. More... | |
| def | getElementByMetaId (self, args) |
Returns the first child element it can find with a specific 'metaid' attribute value, or None if no such object is found. More... | |
| def | getElementBySId (self, args) |
Returns the first child element found that has the given id in the model-wide SId namespace, or None if no such object is found. More... | |
| def | getElementName (self) |
Returns the XML element name of this object, which for SpeciesReference, is always 'speciesReference'. More... | |
| def | getId (self) |
| Returns the value of the 'id' attribute of this SimpleSpeciesReference. More... | |
| def | getIdAttribute (self) |
| Returns the value of the 'id' attribute of this SBML object. More... | |
| def | getLevel (self) |
| Returns the SBML Level of the SBMLDocument object containing this object. More... | |
| def | getLine (self) |
| Returns the line number where this object first appears in the XML representation of the SBML document. More... | |
| def | getListOfAllElements (self, filter=None) |
| Returns an SBaseList of all child SBase objects, including those nested to an arbitrary depth. More... | |
| def | getListOfAllElementsFromPlugins (self, filter=None) |
| Returns a List of all child SBase objects contained in SBML package plug-ins. More... | |
| def | getMetaId (self) |
| Returns the value of the 'metaid' attribute of this SBML object. More... | |
| def | getModel (self) |
| Returns the Model object for the SBML Document in which the current object is located. More... | |
| def | getModelHistory (self, args) |
| Returns the ModelHistory object, if any, attached to this object. More... | |
| def | getName (self) |
| Returns the value of the 'name' attribute of this SimpleSpeciesReference object. More... | |
| def | getNamespaces (self) |
| Returns a list of the XML Namespaces declared on the SBML document owning this object. More... | |
| def | getNotes (self, args) |
| Returns the content of the 'notes' subelement of this object as a tree of XMLNode objects. More... | |
| def | getNotesString (self, args) |
| Returns the content of the 'notes' subelement of this object as a string. More... | |
| def | getNumCVTerms (self) |
| Returns the number of CVTerm objects in the annotations of this SBML object. More... | |
| def | getNumDisabledPlugins (self) |
| Returns the number of disabled plug-in objects (extension interfaces) for SBML Level 3 package extensions known. More... | |
| def | getNumPlugins (self) |
| Returns the number of plug-in objects (extenstion interfaces) for SBML Level 3 package extensions known. More... | |
| def | getPackageCoreVersion (self) |
| Returns the SBML Core Version within the SBML Level of the actual object. More... | |
| def | getPackageName (self) |
| Returns the name of the SBML Level 3 package in which this element is defined. More... | |
| def | getPackageVersion (self) |
| Returns the Version of the SBML Level 3 package to which this element belongs to. More... | |
| def | getParentSBMLObject (self, args) |
| Returns the parent SBML object containing this object. More... | |
| def | getPlugin (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | getPrefix (self) |
| Returns the XML namespace prefix of this element. More... | |
| def | getResourceBiologicalQualifier (self, resource) |
| Returns the MIRIAM biological qualifier associated with the given resource. More... | |
| def | getResourceModelQualifier (self, resource) |
| Returns the MIRIAM model qualifier associated with the given resource. More... | |
| def | getSBMLDocument (self, args) |
| Returns the SBMLDocument object containing this object instance. More... | |
| def | getSBOTerm (self) |
| Returns the integer portion of the value of the 'sboTerm' attribute of this object. More... | |
| def | getSBOTermAsURL (self) |
| Returns the URL representation of the 'sboTerm' attribute of this object. More... | |
| def | getSBOTermID (self) |
| Returns the string representation of the 'sboTerm' attribute of this object. More... | |
| def | getSpecies (self) |
| Get the value of the 'species' attribute. More... | |
| def | getStoichiometry (self) |
| Get the value of the 'stoichiometry' attribute. More... | |
| def | getStoichiometryMath (self, args) |
| Get the content of the 'stoichiometryMath' subelement as an ASTNode tree. More... | |
| def | getTypeCode (self) |
| Returns the libSBML type code for this SBML object. More... | |
| def | getURI (self) |
| Gets the namespace URI to which this element belongs to. More... | |
| def | getVersion (self) |
| Returns the Version within the SBML Level of the SBMLDocument object containing this object. More... | |
| def | hasRequiredAttributes (self) |
Predicate returning True if all the required attributes for this SpeciesReference object have been set. More... | |
| def | hasValidLevelVersionNamespaceCombination (self) |
Predicate returning true if this object's level/version and namespace values correspond to a valid SBML specification. More... | |
| def | initDefaults (self) |
| Initializes the fields of this SpeciesReference object to 'typical' default values. More... | |
| def | isModifier (self) |
Predicate returning True if this is a ModifierSpeciesReference. More... | |
| def | isPackageEnabled (self, pkgName) |
Predicate returning True if the given SBML Level 3 package is enabled with this object. More... | |
| def | isPackageURIEnabled (self, pkgURI) |
Predicate returning True if an SBML Level 3 package with the given URI is enabled with this object. More... | |
| def | isPkgEnabled (self, pkgName) |
Predicate returning True if the given SBML Level 3 package is enabled with this object. More... | |
| def | isPkgURIEnabled (self, pkgURI) |
Predicate returning True if an SBML Level 3 package with the given URI is enabled with this object. More... | |
| def | isSetAnnotation (self) |
Predicate returning True if this object's 'annotation' subelement exists and has content. More... | |
| def | isSetConstant (self) |
Predicate returning True if this SpeciesReference's 'constant' attribute is set. More... | |
| def | isSetId (self) |
Predicate returning True if this SimpleSpeciesReference's 'id' attribute is set. More... | |
| def | isSetIdAttribute (self) |
Predicate returning True if this object's 'id' attribute is set. More... | |
| def | isSetMetaId (self) |
Predicate returning True if this object's 'metaid' attribute is set. More... | |
| def | isSetModelHistory (self) |
Predicate returning True if this object has a ModelHistory object attached to it. More... | |
| def | isSetName (self) |
Predicate returning True if this SimpleSpeciesReference's 'name' attribute is set. More... | |
| def | isSetNotes (self) |
Predicate returning True if this object's 'notes' subelement exists and has content. More... | |
| def | isSetSBOTerm (self) |
Predicate returning True if this object's 'sboTerm' attribute is set. More... | |
| def | isSetSpecies (self) |
Predicate returning True if this SimpleSpeciesReference's 'species' attribute is set. More... | |
| def | isSetStoichiometry (self) |
Predicate returning True if this SpeciesReference's 'stoichiometry' attribute is set. More... | |
| def | isSetStoichiometryMath (self) |
Predicate returning True if this SpeciesReference's 'stoichiometryMath' subelement is set. More... | |
| def | isSetUserData (self) |
| Predicate returning true or false depending on whether the user data of this element has been set. More... | |
| def | matchesRequiredSBMLNamespacesForAddition (self, args) |
Returns True if this object's set of XML namespaces are a subset of the given object's XML namespaces. More... | |
| def | matchesSBMLNamespaces (self, args) |
Returns True if this object's set of XML namespaces are the same as the given object's XML namespaces. More... | |
| def | removeFromParentAndDelete (self) |
| Removes this object from its parent. More... | |
| def | removeTopLevelAnnotationElement (self, args) |
| Removes the top-level element within the 'annotation' subelement of this SBML object with the given name and optional URI. More... | |
| def | renameMetaIdRefs (self, oldid, newid) |
| Replaces all uses of a given meta identifier attribute value with another value. More... | |
| def | renameSIdRefs (self, oldid, newid) |
Replaces all uses of a given SIdRef type attribute value with another value. More... | |
| def | renameUnitSIdRefs (self, oldid, newid) |
Replaces all uses of a given UnitSIdRef type attribute value with another value. More... | |
| def | replaceTopLevelAnnotationElement (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | setAnnotation (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | setConstant (self, flag) |
Sets the 'constant' attribute of this SpeciesReference to the given boolean flag. More... | |
| def | setDenominator (self, value) |
| Set the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1. More... | |
| def | setId (self, sid) |
| Sets the value of the 'id' attribute of this SimpleSpeciesReference. More... | |
| def | setIdAttribute (self, sid) |
| Sets the value of the 'id' attribute of this SBML object. More... | |
| def | setMetaId (self, metaid) |
| Sets the value of the meta-identifier attribute of this SBML object. More... | |
| def | setModelHistory (self, history) |
| Sets the ModelHistory of this object. More... | |
| def | setName (self, name) |
| Sets the value of the 'name' attribute of this SimpleSpeciesReference. More... | |
| def | setNamespaces (self, xmlns) |
| Sets the namespaces relevant of this SBML object. More... | |
| def | setNotes (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | setSBOTerm (self, args) |
| This method has multiple variants; they differ in the arguments they accept. More... | |
| def | setSpecies (self, sid) |
| Sets the 'species' attribute of this SimpleSpeciesReference. More... | |
| def | setStoichiometry (self, value) |
| Sets the value of the 'stoichiometry' attribute of this SpeciesReference. More... | |
| def | setStoichiometryMath (self, math) |
| Sets the 'stoichiometryMath' subelement of this SpeciesReference. More... | |
| def | toSBML (self) |
| Returns a string consisting of a partial SBML corresponding to just this object. More... | |
| def | toXMLNode (self) |
| Returns this element as an XMLNode. More... | |
| def | unsetAnnotation (self) |
| Unsets the value of the 'annotation' subelement of this SBML object. More... | |
| def | unsetConstant (self) |
| Unsets the 'constant' attribute of this SpeciesReference. More... | |
| def | unsetCVTerms (self) |
| Clears the list of CVTerm objects attached to this SBML object. More... | |
| def | unsetId (self) |
| Unsets the value of the 'id' attribute of this SimpleSpeciesReference. More... | |
| def | unsetIdAttribute (self) |
| Unsets the value of the 'id' attribute of this SBML object. More... | |
| def | unsetMetaId (self) |
| Unsets the value of the 'metaid' attribute of this SBML object. More... | |
| def | unsetModelHistory (self) |
| Unsets the ModelHistory object attached to this object. More... | |
| def | unsetName (self) |
| Unsets the value of the 'name' attribute of this SimpleSpeciesReference. More... | |
| def | unsetNotes (self) |
| Unsets the value of the 'notes' subelement of this SBML object. More... | |
| def | unsetSBOTerm (self) |
| Unsets the value of the 'sboTerm' attribute of this SBML object. More... | |
| def | unsetSpecies (self) |
| Unsets the value of the 'species' attribute of this SimpleSpeciesReference. More... | |
| def | unsetStoichiometry (self) |
| Unsets the 'stoichiometry' attribute of this SpeciesReference. More... | |
| def | unsetStoichiometryMath (self) |
| Unsets the 'stoichiometryMath' subelement of this SpeciesReference. More... | |
| def | unsetUserData (self) |
| Unsets the user data of this element. More... | |
| def libsbml.SpeciesReference.__init__ | ( | self, | |
| args | |||
| ) |
This method has multiple variants; they differ in the arguments they accept.
__init__(long level, long version) SpeciesReference __init__(SBMLNamespaces sbmlns) SpeciesReference __init__(SpeciesReference orig) SpeciesReference
Each variant is described separately below.
SpeciesReference(SBMLNamespaces sbmlns)
Creates a new SpeciesReference using the given SBMLNamespaces object sbmlns.
| sbmlns | an SBMLNamespaces object. |
| ValueError | Thrown if the given sbmlns is inconsistent or incompatible with this object. |
SpeciesReference(long level, long version)
Creates a new SpeciesReference using the given SBML level and version values.
| level | a long integer, the SBML Level to assign to this SpeciesReference. |
| version | a long integer, the SBML Version to assign to this SpeciesReference. |
| ValueError | Thrown if the given level and version combination are invalid or if this object is incompatible with the given level and version. |
SpeciesReference(SpeciesReference orig)
Copy constructor; creates a copy of this SpeciesReference.
| orig | the SpeciesReference instance to copy. |
|
inherited |
Adds a copy of the given CVTerm object to this SBML object.
addCVTerm(CVTerm term, bool newBag) int addCVTerm(CVTerm term) int
| term | the CVTerm to assign. |
| newBag | if True, creates a new RDF bag with the same identifier as a previous bag, and if False, adds the term to an existing RDF bag with the same type of qualifier as the term being added. |
create) for alternatives that do not lead to these issues.parameter = value. This is not to be intepreted as a Python keyword argument; the use of a parameter name followed by an equals sign followed by a value is only meant to indicate a default value if the argument is not provided at all. It is not a keyword in the Python sense. | def libsbml.SpeciesReference.appendAnnotation | ( | self, | |
| args | |||
| ) |
This method has multiple variants; they differ in the arguments they accept.
appendAnnotation(XMLNode annotation) int appendAnnotation(string annotation) int
Each variant is described separately below.
appendAnnotation(XMLNode annotation)
Appends annotation content to any existing content in the 'annotation' subelement of this object.
The content in annotation is copied. Unlike SpeciesReference.setAnnotation(), this method allows other annotations to be preserved when an application adds its own data.
| annotation | an XML structure that is to be copied and appended to the content of the 'annotation' subelement of this object. |
appendAnnotation(string annotation)
Appends annotation content to any existing content in the 'annotation' subelement of this object.
The content in annotation is copied. Unlike SpeciesReference.setAnnotation(), this method allows other annotations to be preserved when an application adds its own data.
| annotation | an XML string that is to be copied and appended to the content of the 'annotation' subelement of this object. |
|
inherited |
This method has multiple variants; they differ in the arguments they accept.
appendNotes(XMLNode notes) int appendNotes(string notes) int
Each variant is described separately below.
appendNotes(string notes)
Appends the given notes to the 'notes' subelement of this object.
The content of the parameter notes is copied.
The optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
| notes | an XML string that is to appended to the content of the 'notes' subelement of this object. |
appendNotes(XMLNode notes)
Appends the given notes to the 'notes' subelement of this object.
The content of notes is copied.
The optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
| notes | an XML node structure that is to appended to the content of the 'notes' subelement of this object. |
| def libsbml.SpeciesReference.clone | ( | self | ) |
Creates and returns a deep copy of this SpeciesReference object.
clone() SpeciesReference
|
inherited |
connectToChild()
| def libsbml.SpeciesReference.createStoichiometryMath | ( | self | ) |
Creates a new, empty StoichiometryMath object, adds it to this SpeciesReference, and returns it.
createStoichiometryMath() StoichiometryMath
|
inherited |
Deletes all information stored in disabled plugins.
deleteDisabledPlugins(bool recursive) deleteDisabledPlugins()
If the plugin is re-enabled later, it will then not have any previously-stored information.
| recursive | if True, the disabled information will be deleted also from all child elements, otherwise only from this SBase element. |
|
inherited |
Disables the given SBML Level 3 package on this object.
disablePackage(string pkgURI, string pkgPrefix) intThis method disables the specified package on this object and other objects connected by child-parent links in the same SBMLDocument object.
An example of when this may be useful is during construction of model components when mixing existing and new models. Suppose your application read an SBML document containing a model that used the SBML Hierarchical Model Composition (“comp”) package, and extracted parts of that model in order to construct a new model in memory. The new, in-memory model will not accept a component drawn from an other SBMLDocument with different package namespace declarations. You could reconstruct the same namespaces in the in-memory model first, but as a shortcut, you could also disable the package namespace on the object being added. Here is a code example to help clarify this:
| pkgURI | the URI of the package. |
| pkgPrefix | the XML prefix of the package. |
|
inherited |
Enables or disables the given SBML Level 3 package on this object.
enablePackage(string pkgURI, string pkgPrefix, bool flag) intThis method enables the specified package on this object and other objects connected by child-parent links in the same SBMLDocument object. This method is the converse of SBase.disablePackage().
| pkgURI | the URI of the package. |
| pkgPrefix | the XML prefix of the package. |
| flag | whether to enable (True) or disable (False) the package. |
|
inherited |
This method has multiple variants; they differ in the arguments they accept.
getAncestorOfType(int type, string pkgName) SBase getAncestorOfType(int type) SBase
Each variant is described separately below.
getAncestorOfType(int type, string pkgName = 'core')
Returns the first ancestor object that has the given SBML type code from the given package.
LibSBML attaches an identifying code to every kind of SBML object. These are known as SBML type codes. In the Python language interface for libSBML, the type codes are defined as static integer constants in the interface class libsbml. The names of the type codes all begin with the characters SBML_.
This method searches the tree of objects that are parents of this object, and returns the first one that has the given SBML type code from the given pkgName.
| type | the SBML type code of the object sought. |
| pkgName | (optional) the short name of an SBML Level 3 package to which the sought-after object must belong. |
None if no ancestor exists.pkgName must be used for all type codes from SBML Level 3 packages. Otherwise, the function will search the 'core' namespace alone, not find any corresponding elements, and return None.parameter = value. This is not to be intepreted as a Python keyword argument; the use of a parameter name followed by an equals sign followed by a value is only meant to indicate a default value if the argument is not provided at all. It is not a keyword in the Python sense.getAncestorOfType(int type, string pkgName = 'core')
Returns the first ancestor object that has the given SBML type code from the given package.
LibSBML attaches an identifying code to every kind of SBML object. These are known as SBML type codes. In the Python language interface for libSBML, the type codes are defined as static integer constants in the interface class libsbml. The names of the type codes all begin with the characters SBML_.
This method searches the tree of objects that are parents of this object, and returns the first one that has the given SBML type code from the given pkgName.
| type | the SBML type code of the object sought. |
| pkgName | (optional) the short name of an SBML Level 3 package to which the sought-after object must belong. |
None if no ancestor exists.pkgName must be used for all type codes from SBML Level 3 packages. Otherwise, the function will search the 'core' namespace alone, not find any corresponding elements, and return None.parameter = value. This is not to be intepreted as a Python keyword argument; the use of a parameter name followed by an equals sign followed by a value is only meant to indicate a default value if the argument is not provided at all. It is not a keyword in the Python sense.
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Returns the content of the 'annotation' subelement of this object as a tree of XMLNode objects.
getAnnotation() XMLNode
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
The annotations returned by this method will be in XML form. LibSBML provides an object model and related interfaces for certain specific kinds of annotations, namely model history information and RDF content. See the ModelHistory, CVTerm and RDFAnnotationParser classes for more information about the facilities available.
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Returns the content of the 'annotation' subelement of this object as a character string.
getAnnotationString() stringSBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
The annotations returned by this method will be in string form. See the method getAnnotation() for a version that returns annotations in XML form.
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Returns the column number where this object first appears in the XML representation of the SBML document.
getColumn() long0.| def libsbml.SpeciesReference.getConstant | ( | self | ) |
Get the value of the 'constant' attribute.
getConstant() bool
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Returns a list of CVTerm objects in the annotations of this SBML object.
getCVTerms() List *| def libsbml.SpeciesReference.getDenominator | ( | self | ) |
Get the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1.
getDenominator() intThe 'denominator' attribute is only actually written out in the case of an SBML Level 1 model. In SBML Level 2, rational-number stoichiometries are written as MathML elements in the 'stoichiometryMath' subelement. However, as a convenience to users, libSBML allows the creation and manipulation of rational-number stoichiometries by supplying the numerator and denominator directly rather than having to manually create an ASTNode object. LibSBML will write out the appropriate constructs (either a combination of 'stoichiometry' and 'denominator' in the case of SBML Level 1, or a 'stoichiometryMath' subelement in the case of SBML Level 2). However, as the 'stoichiometryMath' subelement was removed in SBML Level 3, automatic translation of the 'denominator' attribute is no longer supported for that level.
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Returns the nth disabled plug-in object (extension interface) for an SBML Level 3 package extension.
getDisabledPlugin(long n) SBasePlugin
If no such plugin exists, None is returned.
| n | the index of the disabled plug-in to return. |
n is invalid, None is returned.
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Returns the first child element it can find with a specific 'metaid' attribute value, or None if no such object is found.
getElementByMetaId(string metaid) SBase
ID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. The latter point is important, because the uniqueness criterion applies across any attribute with type ID anywhere in the file, not just the 'metaid' attribute used by SBML—something to be aware of if your application-specific XML content inside the 'annotation' subelement happens to use the XML ID type. Although SBML itself specifies the use of XML ID only for the 'metaid' attribute, SBML-compatible applications should be careful if they use XML ID's in XML portions of a model that are not defined by SBML, such as in the application-specific content of the 'annotation' subelement. Finally, note that LibSBML does not provide an explicit XML ID data type; it uses ordinary character strings, which is easier for applications to support.| metaid | string representing the 'metaid' attribute value of the object to find. |
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Returns the first child element found that has the given id in the model-wide SId namespace, or None if no such object is found.
getElementBySId(string id) SBase
| id | string representing the 'id' attribute value of the object to find. |
| def libsbml.SpeciesReference.getElementName | ( | self | ) |
Returns the XML element name of this object, which for SpeciesReference, is always 'speciesReference'.
getElementName() string'speciesReference'.
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Returns the value of the 'id' attribute of this SimpleSpeciesReference.
getId() stringSId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
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Returns the value of the 'id' attribute of this SBML object.
getIdAttribute() stringSId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
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Returns the SBML Level of the SBMLDocument object containing this object.
getLevel() long
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Returns the line number where this object first appears in the XML representation of the SBML document.
getLine() long0.
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Returns an SBaseList of all child SBase objects, including those nested to an arbitrary depth.
getListOfAllElements(ElementFilter filter) SBaseList getListOfAllElements() SBaseList
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Returns a List of all child SBase objects contained in SBML package plug-ins.
getListOfAllElementsFromPlugins(ElementFilter filter) SBaseList getListOfAllElementsFromPlugins() SBaseList
This method walks down the list of all SBML Level 3 packages used by this object and returns all child objects defined by those packages.
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Returns the value of the 'metaid' attribute of this SBML object.
getMetaId() stringID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. The latter point is important, because the uniqueness criterion applies across any attribute with type ID anywhere in the file, not just the 'metaid' attribute used by SBML—something to be aware of if your application-specific XML content inside the 'annotation' subelement happens to use the XML ID type. Although SBML itself specifies the use of XML ID only for the 'metaid' attribute, SBML-compatible applications should be careful if they use XML ID's in XML portions of a model that are not defined by SBML, such as in the application-specific content of the 'annotation' subelement. Finally, note that LibSBML does not provide an explicit XML ID data type; it uses ordinary character strings, which is easier for applications to support.
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Returns the ModelHistory object, if any, attached to this object.
getModelHistory() ModelHistory
None if none exist.
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Returns the value of the 'name' attribute of this SimpleSpeciesReference object.
getName() stringThe 'name' attribute is optional and is not intended to be used for cross-referencing purposes within a model. Its purpose instead is to provide a human-readable label for the component. The data type of 'name' is the type string defined in XML Schema. SBML imposes no restrictions as to the content of 'name' attributes beyond those restrictions defined by the string type in XML Schema.
The recommended practice for handling 'name' is as follows. If a software tool has the capability for displaying the content of 'name' attributes, it should display this content to the user as a component's label instead of the component's 'id'. If the user interface does not have this capability (e.g., because it cannot display or use special characters in symbol names), or if the 'name' attribute is missing on a given component, then the user interface should display the value of the 'id' attribute instead. (Script language interpreters are especially likely to display 'id' instead of 'name'.)
As a consequence of the above, authors of systems that automatically generate the values of 'id' attributes should be aware some systems may display the 'id''s to the user. Authors therefore may wish to take some care to have their software create 'id' values that are: (a) reasonably easy for humans to type and read; and (b) likely to be meaningful, for example by making the 'id' attribute be an abbreviated form of the name attribute value.
An additional point worth mentioning is although there are restrictions on the uniqueness of 'id' values, there are no restrictions on the uniqueness of 'name' values in a model. This allows software applications leeway in assigning component identifiers.
Regardless of the level and version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have names). If the object in question does not posess a 'name' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the name to be set, nor will it read or write 'name' attributes for those objects.
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Returns a list of the XML Namespaces declared on the SBML document owning this object.
getNamespaces() XMLNamespaces
The SBMLNamespaces object encapsulates SBML Level/Version/namespaces information. It is used to communicate the SBML Level, Version, and (in Level 3) packages used in addition to SBML Level 3 Core.
None in certain very usual circumstances where a namespace is not set.
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Returns the content of the 'notes' subelement of this object as a tree of XMLNode objects.
getNotes() XMLNode
The format of 'notes' elements conform to the definition of XHTML 1.0. However, the content cannot be entirely free-form; it must satisfy certain requirements defined in the SBML specifications for specific SBML Levels. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); this method implements a verification process that lets callers check whether the content of a given XMLNode object conforms to the SBML requirements for 'notes' and 'message' structure. Developers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations of using 'notes' in SBML. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
The 'notes' element content returned by this method will be in XML form, but libSBML does not provide an object model specifically for the content of notes. Callers will need to traverse the XML tree structure using the facilities available on XMLNode and related objects. For an alternative method of accessing the notes, see getNotesString().
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Returns the content of the 'notes' subelement of this object as a string.
getNotesString() stringThe format of 'notes' elements conform to the definition of XHTML 1.0. However, the content cannot be entirely free-form; it must satisfy certain requirements defined in the SBML specifications for specific SBML Levels. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); this method implements a verification process that lets callers check whether the content of a given XMLNode object conforms to the SBML requirements for 'notes' and 'message' structure. Developers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations of using 'notes' in SBML. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
For an alternative method of accessing the notes, see getNotes(), which returns the content as an XMLNode tree structure. Depending on an application's needs, one or the other method may be more convenient.
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Returns the number of CVTerm objects in the annotations of this SBML object.
getNumCVTerms() long
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Returns the number of disabled plug-in objects (extension interfaces) for SBML Level 3 package extensions known.
getNumDisabledPlugins() long
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Returns the number of plug-in objects (extenstion interfaces) for SBML Level 3 package extensions known.
getNumPlugins() long
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Returns the SBML Core Version within the SBML Level of the actual object.
getPackageCoreVersion() long
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Returns the name of the SBML Level 3 package in which this element is defined.
getPackageName() string"core" will be returned if this element is defined in SBML Level 3 Core. The string "unknown" will be returned if this element is not defined in any SBML package.
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Returns the Version of the SBML Level 3 package to which this element belongs to.
getPackageVersion() long0 will be returned if this element belongs to the SBML Level 3 Core package.
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Returns the parent SBML object containing this object.
getParentSBMLObject() SBase
This returns the immediately-containing object. This method is convenient when holding an object nested inside other objects in an SBML model.
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This method has multiple variants; they differ in the arguments they accept.
getPlugin(string package) SBasePlugin getPlugin(long n) SBasePlugin
Each variant is described separately below.
getPlugin(long n)
Returns the nth plug-in object (extension interface) for an SBML Level 3 package extension. The returned plug-in will be the appropriate type of plugin requested: calling Model.getPlugin() will return an FbcModelPlugin; calling Parameter.getPlugin() will return CompSBasePlugin, etc.
If no such plugin exists, None is returned.
| n | the index of the plug-in to return. |
n is invalid, None is returned.getPlugin(string package)
Returns a plug-in object (extension interface) for an SBML Level 3 package extension with the given package name or URI. The returned plug-in will be the appropriate type of plugin requested: calling Model.getPlugin() will return an FbcModelPlugin; calling Parameter.getPlugin() will return CompSBasePlugin, etc.
If no such plugin exists, None is returned.
| package | the name or URI of the package. |
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Returns the XML namespace prefix of this element.
getPrefix() stringThis reports the XML namespace prefix chosen for this class of object in the current SBML document. This may be an empty string if the component has no explicit prefix (for instance, if it is a core SBML object placed in the default SBML namespace of the document). If it is not empty, then it corresponds to the XML namespace prefix used set the object, whatever that may be in a given SBML document.
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Returns the MIRIAM biological qualifier associated with the given resource.
getResourceBiologicalQualifier(string resource) longIn MIRIAM, qualifiers are an optional means of indicating the relationship between a model component and its annotations. There are two broad kinds of annotations: model and biological. The latter kind is used to qualify the relationship between a model component and a biological entity which it represents. Examples of relationships include 'is' and 'has part', but many others are possible. MIRIAM defines numerous relationship qualifiers to enable different software tools to qualify biological annotations in the same standardized way. In libSBML, the MIRIAM controlled-vocabulary annotations on an SBML model element are represented using lists of CVTerm objects, and the the MIRIAM biological qualifiers are represented using valueswhose names begin with BQB_ in the interface class libsbml.
This method searches the controlled-vocabulary annotations (i.e., the list of CVTerm objects) on the present object, then out of those that have biological qualifiers, looks for an annotation to the given resource. If such an annotation is found, it returns the type of biological qualifier associated with that resource as a valuewhose name begins with BQB_ from the interface class libsbml.
| resource | string representing the resource; e.g., 'http://www.geneontology.org/#GO:0005892'. |
BQB_ constants defined in libsbml may be expanded in later libSBML releases, to match the values defined by MIRIAM at that later time.
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Returns the MIRIAM model qualifier associated with the given resource.
getResourceModelQualifier(string resource) longIn MIRIAM, qualifiers are an optional means of indicating the relationship between a model component and its annotations. There are two broad kinds of annotations: model and biological. The former kind is used to qualify the relationship between a model component and another modeling object. An example qualifier is 'isDerivedFrom', to indicate that a given component of the model is derived from the modeling object represented by the referenced resource. MIRIAM defines numerous relationship qualifiers to enable different software tools to qualify model annotations in the same standardized way. In libSBML, the MIRIAM controlled-vocabulary annotations on an SBML model element are represented using lists of CVTerm objects, and the the MIRIAM model qualifiers are represented using valueswhose names begin with BQM_ in the interface class libsbml.
This method method searches the controlled-vocabulary annotations (i.e., the list of CVTerm objects) on the present object, then out of those that have model qualifiers, looks for an annotation to the given resource. If such an annotation is found, it returns the type of type of model qualifier associated with that resource as a valuewhose name begins with BQM_ from the interface class libsbml.
| resource | string representing the resource; e.g., 'http://www.geneontology.org/#GO:0005892'. |
BQM_ constants defined in libsbml may be expanded in later libSBML releases, to match the values defined by MIRIAM at that later time.
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Returns the SBMLDocument object containing this object instance.
getSBMLDocument() SBMLDocument
This method allows the caller to obtain the SBMLDocument for the current object.
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Returns the integer portion of the value of the 'sboTerm' attribute of this object.
getSBOTerm() intint, and SBO identifiers are stored simply as integers. -1 if the value is not set.
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Returns the URL representation of the 'sboTerm' attribute of this object.
getSBOTermAsURL() stringThis method returns the entire SBO identifier as a text string in the form http://identifiers.org/biomodels.sbo/SBO:NNNNNNN'.
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Returns the string representation of the 'sboTerm' attribute of this object.
getSBOTermID() stringint, and SBO identifiers are stored simply as integers.
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Get the value of the 'species' attribute.
getSpecies() string| def libsbml.SpeciesReference.getStoichiometry | ( | self | ) |
Get the value of the 'stoichiometry' attribute.
getStoichiometry() floatIn SBML Level 2, product and reactant stoichiometries can be specified using either 'stoichiometry' or 'stoichiometryMath' in a SpeciesReference object. The former is to be used when a stoichiometry is simply a scalar number, while the latter is for occasions when it needs to be a rational number or it needs to reference other mathematical expressions. The 'stoichiometry' attribute is of type float and should contain values greater than zero (0). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1. For maximum interoperability between different software tools, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal).
In SBML Level 3, there is no StoichiometryMath, and SpeciesReference objects have only the 'stoichiometry' attribute.
| def libsbml.SpeciesReference.getStoichiometryMath | ( | self, | |
| args | |||
| ) |
Get the content of the 'stoichiometryMath' subelement as an ASTNode tree.
getStoichiometryMath() StoichiometryMath
The 'stoichiometryMath' element exists only in SBML Level 2. There, product and reactant stoichiometries can be specified using either 'stoichiometry' or 'stoichiometryMath' in a SpeciesReference object. The former is to be used when a stoichiometry is simply a scalar number, while the latter is for occasions when it needs to be a rational number or it needs to reference other mathematical expressions. The 'stoichiometry' attribute is of type float and should contain values greater than zero (0). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1. For maximum interoperability between different software tools, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal).
| def libsbml.SpeciesReference.getTypeCode | ( | self | ) |
Returns the libSBML type code for this SBML object.
getTypeCode() intSBML_. In the Python language interface for libSBML, the type codes are defined as static integer constants in the interface class libsbml. Note that different Level 3 package plug-ins may use overlapping type codes; to identify the package to which a given object belongs, call the SBase.getPackageName() method on the object.The exception to this is lists: all SBML-style list elements have the type SBML_LIST_OF, regardless of what package they are from.
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Gets the namespace URI to which this element belongs to.
getURI() stringFor example, all elements that belong to SBML Level 3 Version 1 Core must would have the URI 'http://www.sbml.org/sbml/level3/version1/core'; all elements that belong to Layout Extension Version 1 for SBML Level 3 Version 1 Core must would have the URI 'http://www.sbml.org/sbml/level3/version1/layout/version1'.
This function first returns the URI for this element by looking into the SBMLNamespaces object of the document with the its package name. If not found, it will then look for the namespace associated with the element itself.
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Returns the Version within the SBML Level of the SBMLDocument object containing this object.
getVersion() long| def libsbml.SpeciesReference.hasRequiredAttributes | ( | self | ) |
Predicate returning True if all the required attributes for this SpeciesReference object have been set.
hasRequiredAttributes() boolThe required attributes for a SpeciesReference object are:
True if the required attributes have been set, False otherwise.
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Predicate returning true if this object's level/version and namespace values correspond to a valid SBML specification.
hasValidLevelVersionNamespaceCombination() boolThe valid combinations of SBML Level, Version and Namespace as of this release of libSBML are the following:
http://www.sbml.org/sbml/level1 http://www.sbml.org/sbml/level2 http://www.sbml.org/sbml/level2/version2 http://www.sbml.org/sbml/level2/version3 http://www.sbml.org/sbml/level2/version4 http://www.sbml.org/sbml/level3/version1/core true if the level, version and namespace values of this SBML object correspond to a valid set of values, false otherwise. | def libsbml.SpeciesReference.initDefaults | ( | self | ) |
Initializes the fields of this SpeciesReference object to 'typical' default values.
initDefaults()
The SBML SpeciesReference component has slightly different aspects and default attribute values in different SBML Levels and Versions. This method sets the values to certain common defaults, based mostly on what they are in SBML Level 2. Specifically:
1.0 1
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Predicate returning True if this is a ModifierSpeciesReference.
isModifier() boolTrue if this SimpleSpeciesReference's subclass is ModiferSpeciesReference, False if it is a plain SpeciesReference.
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Predicate returning True if the given SBML Level 3 package is enabled with this object.
isPackageEnabled(string pkgName) boolThe search ignores the package version.
| pkgName | the name of the package. |
True if the given package is enabled within this object, False otherwise.
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Predicate returning True if an SBML Level 3 package with the given URI is enabled with this object.
isPackageURIEnabled(string pkgURI) bool| pkgURI | the URI of the package. |
True if the given package is enabled within this object, False otherwise.
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Predicate returning True if the given SBML Level 3 package is enabled with this object.
isPkgEnabled(string pkgName) boolThe search ignores the package version.
| pkgName | the name of the package. |
True if the given package is enabled within this object, False otherwise.
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Predicate returning True if an SBML Level 3 package with the given URI is enabled with this object.
isPkgURIEnabled(string pkgURI) bool| pkgURI | the URI of the package. |
True if the given package is enabled within this object, False otherwise.
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Predicate returning True if this object's 'annotation' subelement exists and has content.
isSetAnnotation() boolWhereas the SBase 'notes' subelement is a container for content to be shown directly to humans, the 'annotation' element is a container for optional software-generated content not meant to be shown to humans. Every object derived from SBase can have its own value for 'annotation'. The element's content type is XML type 'any', allowing essentially arbitrary well-formed XML data content.
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
True if a 'annotation' subelement exists, False otherwise.| def libsbml.SpeciesReference.isSetConstant | ( | self | ) |
Predicate returning True if this SpeciesReference's 'constant' attribute is set.
True if the 'constant' attribute of this SpeciesReference is set, False otherwise.isSetConstant() bool
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inherited |
Predicate returning True if this SimpleSpeciesReference's 'id' attribute is set.
isSetId() boolSId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
True if the 'id' attribute of this SBML object is set, False otherwise.
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inherited |
Predicate returning True if this object's 'id' attribute is set.
isSetIdAttribute() boolSId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
True if the 'id' attribute of this SBML object is set, False otherwise.
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inherited |
Predicate returning True if this object's 'metaid' attribute is set.
isSetMetaId() boolID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. The latter point is important, because the uniqueness criterion applies across any attribute with type ID anywhere in the file, not just the 'metaid' attribute used by SBML—something to be aware of if your application-specific XML content inside the 'annotation' subelement happens to use the XML ID type. Although SBML itself specifies the use of XML ID only for the 'metaid' attribute, SBML-compatible applications should be careful if they use XML ID's in XML portions of a model that are not defined by SBML, such as in the application-specific content of the 'annotation' subelement. Finally, note that LibSBML does not provide an explicit XML ID data type; it uses ordinary character strings, which is easier for applications to support.True if the 'metaid' attribute of this SBML object is set, False otherwise.
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inherited |
Predicate returning True if this object has a ModelHistory object attached to it.
isSetModelHistory() boolTrue if the ModelHistory of this object is set, False otherwise.
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Predicate returning True if this SimpleSpeciesReference's 'name' attribute is set.
isSetName() boolThe 'name' attribute is optional and is not intended to be used for cross-referencing purposes within a model. Its purpose instead is to provide a human-readable label for the component. The data type of 'name' is the type string defined in XML Schema. SBML imposes no restrictions as to the content of 'name' attributes beyond those restrictions defined by the string type in XML Schema.
The recommended practice for handling 'name' is as follows. If a software tool has the capability for displaying the content of 'name' attributes, it should display this content to the user as a component's label instead of the component's 'id'. If the user interface does not have this capability (e.g., because it cannot display or use special characters in symbol names), or if the 'name' attribute is missing on a given component, then the user interface should display the value of the 'id' attribute instead. (Script language interpreters are especially likely to display 'id' instead of 'name'.)
As a consequence of the above, authors of systems that automatically generate the values of 'id' attributes should be aware some systems may display the 'id''s to the user. Authors therefore may wish to take some care to have their software create 'id' values that are: (a) reasonably easy for humans to type and read; and (b) likely to be meaningful, for example by making the 'id' attribute be an abbreviated form of the name attribute value.
An additional point worth mentioning is although there are restrictions on the uniqueness of 'id' values, there are no restrictions on the uniqueness of 'name' values in a model. This allows software applications leeway in assigning component identifiers.
Regardless of the level and version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have names). If the object in question does not posess a 'name' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the name to be set, nor will it read or write 'name' attributes for those objects.
True if the 'name' attribute of this SBML object is set, False otherwise.
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inherited |
Predicate returning True if this object's 'notes' subelement exists and has content.
isSetNotes() boolThe optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
True if a 'notes' subelement exists, False otherwise.
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Predicate returning True if this object's 'sboTerm' attribute is set.
isSetSBOTerm() boolTrue if the 'sboTerm' attribute of this SBML object is set, False otherwise.
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inherited |
Predicate returning True if this SimpleSpeciesReference's 'species' attribute is set.
isSetSpecies() boolTrue if the 'species' attribute of this SimpleSpeciesReference is set, False otherwise. | def libsbml.SpeciesReference.isSetStoichiometry | ( | self | ) |
Predicate returning True if this SpeciesReference's 'stoichiometry' attribute is set.
isSetStoichiometry() boolTrue if the 'stoichiometry' attribute of this SpeciesReference is set, False otherwise. | def libsbml.SpeciesReference.isSetStoichiometryMath | ( | self | ) |
Predicate returning True if this SpeciesReference's 'stoichiometryMath' subelement is set.
True if the 'stoichiometryMath' subelement of this SpeciesReference is set, False otherwise.isSetStoichiometryMath() bool
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inherited |
Predicate returning true or false depending on whether the user data of this element has been set.
isSetUserData() boolTrue if this object's user data has been set, False otherwise.
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inherited |
Returns True if this object's set of XML namespaces are a subset of the given object's XML namespaces.
matchesRequiredSBMLNamespacesForAddition(SBase sb) bool
| sb | an object to compare with respect to namespaces. |
True if this object's collection of namespaces is a subset of sb's, False otherwise.
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inherited |
Returns True if this object's set of XML namespaces are the same as the given object's XML namespaces.
matchesSBMLNamespaces(SBase sb) bool
| sb | an object to compare with respect to namespaces. |
True if this object's collection of namespaces is the same as sb's, False otherwise.
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inherited |
Removes this object from its parent.
removeFromParentAndDelete() intIf the parent was storing this object as a pointer, it is deleted. If not, it is simply cleared (as in ListOf objects). This is a pure virtual method, as every SBase element has different parents, and therefore different methods of removing itself. Will fail (and not delete itself) if it has no parent object. This function is designed to be overridden, but for all objects whose parent is of the class ListOf, the default implementation will work.
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inherited |
Removes the top-level element within the 'annotation' subelement of this SBML object with the given name and optional URI.
removeTopLevelAnnotationElement(string elementName, string elementURI, bool removeEmpty) int removeTopLevelAnnotationElement(string elementName, string elementURI) int removeTopLevelAnnotationElement(string elementName) int
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
Calling this method allows a particular annotation element to be removed whilst the remaining annotations remain intact.
| elementName | a string representing the name of the top level annotation element that is to be removed. |
| elementURI | an optional string that is used to check both the name and URI of the top level element to be removed. |
| removeEmpty | if after removing of the element, the annotation is empty, and the removeEmpty argument is true, the annotation node will be deleted (default). |
parameter = value. This is not to be intepreted as a Python keyword argument; the use of a parameter name followed by an equals sign followed by a value is only meant to indicate a default value if the argument is not provided at all. It is not a keyword in the Python sense.
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inherited |
Replaces all uses of a given meta identifier attribute value with another value.
renameMetaIdRefs(string oldid, string newid)
ID; the SBML object attribute itself is typically named metaid. All attributes that hold values referring to values of type ID are of the XML data type IDREF. They are also sometimes informally referred to as 'metaid refs', in analogy to the SBML-defined type SIdRef.This method works by looking at all meta-identifier attribute values, comparing the identifiers to the value of oldid. If any matches are found, the matching identifiers are replaced with newid. The method does not descend into child elements.
| oldid | the old identifier. |
| newid | the new identifier. |
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inherited |
Replaces all uses of a given SIdRef type attribute value with another value.
renameSIdRefs(string oldid, string newid)
SId. In SBML Level 3, an explicit data type called SIdRef was introduced for attribute values that refer to SId values; in previous Levels of SBML, this data type did not exist and attributes were simply described to as 'referring to an identifier', but the effective data type was the same as SIdRef in Level 3. These and other methods of libSBML refer to the type SIdRef for all Levels of SBML, even if the corresponding SBML specification did not explicitly name the data type.This method works by looking at all attributes and (if appropriate) mathematical formulas in MathML content, comparing the referenced identifiers to the value of oldid. If any matches are found, the matching values are replaced with newid. The method does not descend into child elements.
| oldid | the old identifier. |
| newid | the new identifier. |
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inherited |
Replaces all uses of a given UnitSIdRef type attribute value with another value.
renameUnitSIdRefs(string oldid, string newid)
UnitSId. In SBML Level 3, an explicit data type called UnitSIdRef was introduced for attribute values that refer to UnitSId values; in previous Levels of SBML, this data type did not exist and attributes were simply described to as 'referring to a unit identifier', but the effective data type was the same as UnitSIdRef in Level 3. These and other methods of libSBML refer to the type UnitSIdRef for all Levels of SBML, even if the corresponding SBML specification did not explicitly name the data type.This method works by looking at all unit identifier attribute values (including, if appropriate, inside mathematical formulas), comparing the referenced unit identifiers to the value of oldid. If any matches are found, the matching values are replaced with newid. The method does not descend into child elements.
| oldid | the old identifier. |
| newid | the new identifier. |
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inherited |
This method has multiple variants; they differ in the arguments they accept.
replaceTopLevelAnnotationElement(XMLNode annotation) int replaceTopLevelAnnotationElement(string annotation) int
Each variant is described separately below.
replaceTopLevelAnnotationElement(XMLNode annotation)
Replaces the given top-level element within the 'annotation' subelement of this SBML object and with the annotation element supplied.
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
This method determines the name of the element to be replaced from the annotation argument. Functionally it is equivalent to calling removeTopLevelAnnotationElement(name) followed by calling appendAnnotation(annotation_with_name), with the exception that the placement of the annotation element remains the same.
| annotation | XMLNode representing the replacement top level annotation. |
replaceTopLevelAnnotationElement(string annotation)
Replaces the given top-level element within the 'annotation' subelement of this SBML object and with the annotation element supplied.
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
This method determines the name of the element to be replaced from the annotation argument. Functionally it is equivalent to calling removeTopLevelAnnotationElement(name) followed by calling appendAnnotation(annotation_with_name), with the exception that the placement of the annotation element remains the same.
| annotation | string representing the replacement top level annotation. |
| def libsbml.SpeciesReference.setAnnotation | ( | self, | |
| args | |||
| ) |
This method has multiple variants; they differ in the arguments they accept.
setAnnotation(XMLNode annotation) int setAnnotation(string annotation) int
Each variant is described separately below.
setAnnotation(XMLNode annotation)
Sets the value of the 'annotation' subelement of this SBML object to a copy of annotation.
Any existing content of the 'annotation' subelement is discarded. Unless you have taken steps to first copy and reconstitute any existing annotations into the annotation that is about to be assigned, it is likely that performing such wholesale replacement is unfriendly towards other software applications whose annotations are discarded. An alternative may be to use appendAnnotation().
| annotation | an XML structure that is to be used as the content of the 'annotation' subelement of this object. |
setAnnotation(string annotation)
Sets the value of the 'annotation' subelement of this SBML object to a copy of annotation.
Any existing content of the 'annotation' subelement is discarded. Unless you have taken steps to first copy and reconstitute any existing annotations into the annotation that is about to be assigned, it is likely that performing such wholesale replacement is unfriendly towards other software applications whose annotations are discarded. An alternative may be to use appendAnnotation().
| annotation | an XML string that is to be used as the content of the 'annotation' subelement of this object. |
| def libsbml.SpeciesReference.setConstant | ( | self, | |
| flag | |||
| ) |
Sets the 'constant' attribute of this SpeciesReference to the given boolean flag.
setConstant(bool flag) int| flag | a boolean, the value for the 'constant' attribute of this SpeciesReference instance. |
| def libsbml.SpeciesReference.setDenominator | ( | self, | |
| value | |||
| ) |
Set the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1.
setDenominator(int value) intThe 'denominator' attribute is only actually written out in the case of an SBML Level 1 model. In SBML Level 2, rational-number stoichiometries are written as MathML elements in the 'stoichiometryMath' subelement. However, as a convenience to users, libSBML allows the creation and manipulation of rational-number stoichiometries by supplying the numerator and denominator directly rather than having to manually create an ASTNode object. LibSBML will write out the appropriate constructs (either a combination of 'stoichiometry' and 'denominator' in the case of SBML Level 1, or a 'stoichiometryMath' subelement in the case of SBML Level 2). However, as the 'stoichiometryMath' subelement was removed in SBML Level 3, automatic translation of the 'denominator' attribute is no longer supported for that level.
| value | the scalar value. |
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inherited |
Sets the value of the 'id' attribute of this SimpleSpeciesReference.
setId(string sid) intsid is copied.SId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
| sid | the string to use as the identifier of this object. |
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inherited |
Sets the value of the 'id' attribute of this SBML object.
setIdAttribute(string sid) intsid is copied.SId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
| sid | the string to use as the identifier of this object. |
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inherited |
Sets the value of the meta-identifier attribute of this SBML object.
setMetaId(string metaid) intID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. The latter point is important, because the uniqueness criterion applies across any attribute with type ID anywhere in the file, not just the 'metaid' attribute used by SBML—something to be aware of if your application-specific XML content inside the 'annotation' subelement happens to use the XML ID type. Although SBML itself specifies the use of XML ID only for the 'metaid' attribute, SBML-compatible applications should be careful if they use XML ID's in XML portions of a model that are not defined by SBML, such as in the application-specific content of the 'annotation' subelement. Finally, note that LibSBML does not provide an explicit XML ID data type; it uses ordinary character strings, which is easier for applications to support.The string metaid is copied.
| metaid | the identifier string to use as the value of the 'metaid' attribute. |
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inherited |
Sets the ModelHistory of this object.
setModelHistory(ModelHistory history) int
The content of history is copied, and this object's existing model history content is deleted.
| history | ModelHistory of this object. |
|
inherited |
Sets the value of the 'name' attribute of this SimpleSpeciesReference.
setName(string name) intThe string in name is copied.
| name | the new name for the SBML object. |
|
inherited |
Sets the namespaces relevant of this SBML object.
setNamespaces(XMLNamespaces xmlns) int
The content of xmlns is copied, and this object's existing namespace content is deleted.
The SBMLNamespaces object encapsulates SBML Level/Version/namespaces information. It is used to communicate the SBML Level, Version, and (in Level 3) packages used in addition to SBML Level 3 Core.
| xmlns | the namespaces to set. |
|
inherited |
This method has multiple variants; they differ in the arguments they accept.
setNotes(XMLNode notes) int setNotes(string notes, bool addXHTMLMarkup) int setNotes(string notes) int
Each variant is described separately below.
setNotes(string notes, bool addXHTMLMarkup = false)
Sets the value of the 'notes' subelement of this SBML object to a copy of the string notes.
The content of notes is copied, and any existing content of this object's 'notes' subelement is deleted.
The optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
The following code illustrates a very simple way of setting the notes using this method. Here, the object being annotated is the whole SBML document, but that is for illustration purposes only; you could of course use this same approach to annotate any other SBML component.
| notes | an XML string that is to be used as the content of the 'notes' subelement of this object. |
| addXHTMLMarkup | a boolean indicating whether to wrap the contents of the notes argument with XHTML paragraph (<p>) tags. This is appropriate when the string in notes does not already containg the appropriate XHTML markup. |
parameter = value. This is not to be intepreted as a Python keyword argument; the use of a parameter name followed by an equals sign followed by a value is only meant to indicate a default value if the argument is not provided at all. It is not a keyword in the Python sense.setNotes(XMLNode notes)
Sets the value of the 'notes' subelement of this SBML object.
The content of notes is copied, and any existing content of this object's 'notes' subelement is deleted.
The optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
| notes | an XML structure that is to be used as the content of the 'notes' subelement of this object. |
|
inherited |
This method has multiple variants; they differ in the arguments they accept.
setSBOTerm(int value) int setSBOTerm(string sboid) int
Each variant is described separately below.
setSBOTerm(int value)
Sets the value of the 'sboTerm' attribute.
int, and SBO identifiers are stored simply as integers. | value | the NNNNNNN integer portion of the SBO identifier. |
setSBOTerm(string sboid)
Sets the value of the 'sboTerm' attribute by string.
int, and SBO identifiers are stored simply as integers.
|
inherited |
Sets the 'species' attribute of this SimpleSpeciesReference.
setSpecies(string sid) intThe identifier string passed in sid is copied.
| sid | the identifier of a species defined in the enclosing Model's ListOfSpecies. |
| def libsbml.SpeciesReference.setStoichiometry | ( | self, | |
| value | |||
| ) |
Sets the value of the 'stoichiometry' attribute of this SpeciesReference.
setStoichiometry (float value) intIn SBML Level 2, product and reactant stoichiometries can be specified using either 'stoichiometry' or 'stoichiometryMath' in a SpeciesReference object. The former is to be used when a stoichiometry is simply a scalar number, while the latter is for occasions when it needs to be a rational number or it needs to reference other mathematical expressions. The 'stoichiometry' attribute is of type float and should contain values greater than zero (0). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1. For maximum interoperability between different software tools, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal).
In SBML Level 3, there is no StoichiometryMath, and SpeciesReference objects have only the 'stoichiometry' attribute.
| value | the new value of the 'stoichiometry' attribute. |
| def libsbml.SpeciesReference.setStoichiometryMath | ( | self, | |
| math | |||
| ) |
Sets the 'stoichiometryMath' subelement of this SpeciesReference.
setStoichiometryMath(StoichiometryMath math) int
The Abstract Syntax Tree in math is copied.
In SBML Level 2, product and reactant stoichiometries can be specified using either 'stoichiometry' or 'stoichiometryMath' in a SpeciesReference object. The former is to be used when a stoichiometry is simply a scalar number, while the latter is for occasions when it needs to be a rational number or it needs to reference other mathematical expressions. The 'stoichiometry' attribute is of type float and should contain values greater than zero (0). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1. For maximum interoperability between different software tools, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal).
In SBML Level 3, there is no StoichiometryMath, and SpeciesReference objects have only the 'stoichiometry' attribute.
| math | the StoichiometryMath expression that is to be copied as the content of the 'stoichiometryMath' subelement. |
False although getStoichiometry() will return 1.0) if the given math is not null because the 'stoichiometry' attribute and the stoichiometryMath' subelement are mutually exclusive.
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Returns a string consisting of a partial SBML corresponding to just this object.
toSBML() string
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Unsets the value of the 'annotation' subelement of this SBML object.
unsetAnnotation() intWhereas the SBase 'notes' subelement is a container for content to be shown directly to humans, the 'annotation' element is a container for optional software-generated content not meant to be shown to humans. Every object derived from SBase can have its own value for 'annotation'. The element's content type is XML type 'any', allowing essentially arbitrary well-formed XML data content.
SBML places a few restrictions on the organization of the content of annotations; these are intended to help software tools read and write the data as well as help reduce conflicts between annotations added by different tools. Please see the SBML specifications for more details.
| def libsbml.SpeciesReference.unsetConstant | ( | self | ) |
Unsets the 'constant' attribute of this SpeciesReference.
unsetConstant() int
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Clears the list of CVTerm objects attached to this SBML object.
unsetCVTerms() int
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Unsets the value of the 'id' attribute of this SimpleSpeciesReference.
unsetId() intSId or a type derived from that, such as UnitSId, depending on the object in question. All data types are defined as follows: letter ::= 'a'..'z','A'..'Z' digit ::= '0'..'9' idChar ::= letter | digit | '_' SId ::= ( letter | '_' ) idChar*The characters
( and ) are used for grouping, the character * 'zero or more times', and the character | indicates logical 'or'. The equality of SBML identifiers is determined by an exact character sequence match; i.e., comparisons must be performed in a case-sensitive manner. This applies to all uses of SId, SIdRef, and derived types.Users need to be aware of some important API issues that are the result of the history of SBML and libSBML. Prior to SBML Level 3 Version 2, SBML defined 'id' and 'name' attributes on only a subset of SBML objects. To simplify the work of programmers, libSBML's API provided get, set, check, and unset on the SBase object class itself instead of on individual subobject classes. This made the get/set/etc. methods uniformly available on all objects in the libSBML API. LibSBML simply returned empty strings or otherwise did not act when the methods were applied to SBML objects that were not defined by the SBML specification to have 'id' or 'name' attributes. Additional complications arose with the rule and assignment objects: InitialAssignment, EventAssignment, AssignmentRule, and RateRule. In early versions of SBML, the rule object hierarchy was different, and in addition, then as now, they possess different attributes: 'variable' (for the rules and event assignments), 'symbol' (for initial assignments), or neither (for algebraic rules). Prior to SBML Level 3 Version 2, getId() would always return an empty string, and isSetId() would always return False for objects of these classes.
With the addition of 'id' and 'name' attributes on SBase in Level 3 Version 2, it became necessary to introduce a new way to interact with the attributes more consistently in libSBML to avoid breaking backward compatibility in the behavior of the original 'id' methods. For this reason, libSBML provides four functions (getIdAttribute(), setIdAttribute(), isSetIdAttribute(), and unsetIdAttribute()) that always act on the actual 'id' attribute inherited from SBase, regardless of the object's type. These new methods should be used instead of the older getId()/setId()/etc. methods unless the old behavior is somehow necessary. Regardless of the Level and Version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have identifiers). If the object in question does not posess an 'id' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the identifier to be set, nor will it read or write 'id' attributes for those objects.
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Unsets the value of the 'id' attribute of this SBML object.
unsetIdAttribute() intMost (but not all) objects in SBML include two common attributes: 'id' and 'name'. The identifier given by an object's 'id' attribute value is used to identify the object within the SBML model definition. Other objects can refer to the component using this identifier.
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Unsets the value of the 'metaid' attribute of this SBML object.
unsetMetaId() intID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. The latter point is important, because the uniqueness criterion applies across any attribute with type ID anywhere in the file, not just the 'metaid' attribute used by SBML—something to be aware of if your application-specific XML content inside the 'annotation' subelement happens to use the XML ID type. Although SBML itself specifies the use of XML ID only for the 'metaid' attribute, SBML-compatible applications should be careful if they use XML ID's in XML portions of a model that are not defined by SBML, such as in the application-specific content of the 'annotation' subelement. Finally, note that LibSBML does not provide an explicit XML ID data type; it uses ordinary character strings, which is easier for applications to support.
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Unsets the ModelHistory object attached to this object.
unsetModelHistory() int
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Unsets the value of the 'name' attribute of this SimpleSpeciesReference.
unsetName() intThe 'name' attribute is optional and is not intended to be used for cross-referencing purposes within a model. Its purpose instead is to provide a human-readable label for the component. The data type of 'name' is the type string defined in XML Schema. SBML imposes no restrictions as to the content of 'name' attributes beyond those restrictions defined by the string type in XML Schema.
The recommended practice for handling 'name' is as follows. If a software tool has the capability for displaying the content of 'name' attributes, it should display this content to the user as a component's label instead of the component's 'id'. If the user interface does not have this capability (e.g., because it cannot display or use special characters in symbol names), or if the 'name' attribute is missing on a given component, then the user interface should display the value of the 'id' attribute instead. (Script language interpreters are especially likely to display 'id' instead of 'name'.)
As a consequence of the above, authors of systems that automatically generate the values of 'id' attributes should be aware some systems may display the 'id''s to the user. Authors therefore may wish to take some care to have their software create 'id' values that are: (a) reasonably easy for humans to type and read; and (b) likely to be meaningful, for example by making the 'id' attribute be an abbreviated form of the name attribute value.
An additional point worth mentioning is although there are restrictions on the uniqueness of 'id' values, there are no restrictions on the uniqueness of 'name' values in a model. This allows software applications leeway in assigning component identifiers.
Regardless of the level and version of the SBML, these functions allow client applications to use more generalized code in some situations (for instance, when manipulating objects that are all known to have names). If the object in question does not posess a 'name' attribute according to the SBML specification for the Level and Version in use, libSBML will not allow the name to be set, nor will it read or write 'name' attributes for those objects.
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Unsets the value of the 'notes' subelement of this SBML object.
unsetNotes() intThe optional SBML element named 'notes', present on every major SBML component type, is intended as a place for storing optional information intended to be seen by humans. An example use of the 'notes' element would be to contain formatted user comments about the model element in which the 'notes' element is enclosed. Every object derived directly or indirectly from type SBase can have a separate value for 'notes', allowing users considerable freedom when adding comments to their models.
The format of 'notes' elements must be XHTML 1.0. To help verify the formatting of 'notes' content, libSBML provides the static utility method SyntaxChecker.hasExpectedXHTMLSyntax(); however, readers are urged to consult the appropriate SBML specification document for the Level and Version of their model for more in-depth explanations. The SBML Level 2 and 3 specifications have considerable detail about how 'notes' element content must be structured.
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Unsets the value of the 'sboTerm' attribute of this SBML object.
unsetSBOTerm() int
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Unsets the value of the 'species' attribute of this SimpleSpeciesReference.
unsetSpecies() int| def libsbml.SpeciesReference.unsetStoichiometry | ( | self | ) |
Unsets the 'stoichiometry' attribute of this SpeciesReference.
unsetStoichiometry() int1.0) and isSetStoichiometry() will still return True. In SBML Level 2, the 'stoichiometry' attribute of this object will be unset (which will result in isSetStoichiometry() returning False, although getStoichiometry() will return 1.0) if the 'stoichiometryMath' subelement is set, otherwise the attribute will be just reset to the default value (1.0) (and isSetStoichiometry() will still return True). In SBML Level 3, the 'stoichiometry' attribute of this object will be set to NaN and isSetStoichiometry() will return False. | def libsbml.SpeciesReference.unsetStoichiometryMath | ( | self | ) |
Unsets the 'stoichiometryMath' subelement of this SpeciesReference.
unsetStoichiometryMath() intfloat and should contain values greater than zero (0). The 'stoichiometryMath' element is implemented as an element containing a MathML expression. These two are mutually exclusive; only one of 'stoichiometry' or 'stoichiometryMath' should be defined in a given SpeciesReference instance. When neither the attribute nor the element is present, the value of 'stoichiometry' in the SpeciesReference instance defaults to 1. For maximum interoperability between different software tools, the 'stoichiometry' attribute should be used in preference to 'stoichiometryMath' when a species' stoichiometry is a simple scalar number (integer or decimal).In SBML Level 3, there is no StoichiometryMath, and SpeciesReference objects have only the 'stoichiometry' attribute.
1.0) if the 'stoichiometry' attribute has not been set.
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Unsets the user data of this element.
unsetUserData() int