libsbml.SpeciesReference Class Reference

Inheritance diagram for libsbml.SpeciesReference:

Detailed Description

LibSBML implementation of SBML's SpeciesReference construct.

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.

SpeciesReference in SBML Level 2

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 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, 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>

SpeciesReference in SBML Level 3

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 Version 1 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	addCVTerm
def	appendAnnotation
def	appendNotes
def	clone
def	createStoichiometryMath
def	disablePackage
def	enablePackage
def	getAncestorOfType
def	getAnnotation
def	getAnnotationString
def	getColumn
def	getConstant
def	getCVTerm
def	getCVTerms
def	getDenominator
def	getElementByMetaId
def	getElementBySId
def	getElementName
def	getId
def	getLevel
def	getLine
def	getListOfAllElements
def	getListOfAllElementsFromPlugins
def	getMetaId
def	getModel
def	getModelHistory
def	getName
def	getNamespaces
def	getNotes
def	getNotesString
def	getNumCVTerms
def	getNumPlugins
def	getPackageName
def	getPackageVersion
def	getParentSBMLObject
def	getPlugin
def	getResourceBiologicalQualifier
def	getResourceModelQualifier
def	getSBMLDocument
def	getSBOTerm
def	getSBOTermID
def	getSpecies
def	getStoichiometry
def	getStoichiometryMath
def	getTypeCode
def	getVersion
def	hasRequiredAttributes
def	hasValidLevelVersionNamespaceCombination
def	initDefaults
def	isModifier
def	isPackageEnabled
def	isPackageURIEnabled
def	isPkgEnabled
def	isPkgURIEnabled
def	isSetAnnotation
def	isSetConstant
def	isSetId
def	isSetMetaId
def	isSetModelHistory
def	isSetName
def	isSetNotes
def	isSetSBOTerm
def	isSetSpecies
def	isSetStoichiometry
def	isSetStoichiometryMath
def	matchesSBMLNamespaces
def	removeFromParentAndDelete
def	renameMetaIdRefs
def	renameSIdRefs
def	renameUnitSIdRefs
def	setAnnotation
def	setConstant
def	setDenominator
def	setId
def	setMetaId
def	setModelHistory
def	setName
def	setNamespaces
def	setNotes
def	setSBOTerm
def	setSpecies
def	setStoichiometry
def	setStoichiometryMath
def	toSBML
def	unsetAnnotation
def	unsetCVTerms
def	unsetId
def	unsetMetaId
def	unsetModelHistory
def	unsetName
def	unsetNotes
def	unsetSBOTerm
def	unsetStoichiometry
def	unsetStoichiometryMath

Member Function Documentation

def libsbml.SBase.addCVTerm	(	self,
		args
	)		`[inherited]`

Python method signature(s):

addCVTerm(CVTerm term, bool newBag = False)    int
addCVTerm(CVTerm term)    int

Adds a copy of the given CVTerm object to this SBML object.

Parameters:

	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.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS
LIBSBML_OPERATION_FAILED
LIBSBML_UNEXPECTED_ATTRIBUTE , if this object lacks a 'metaid' attribute
LIBSBML_INVALID_OBJECT

Note:: Since the CV Term uses the 'metaid' attribute of the object as a reference, if the object has no 'metaid' attribute value set, then the CVTerm will not be added.

Warning:: The fact that this method copies the object passed to it means that the caller will be left holding a physically different object instance than the one contained in this object. Changes made to the original object instance (such as resetting attribute values) will not affect the instance added here. In addition, the caller should make sure to free the original object if it is no longer being used, or else a memory leak will result.

Documentation note:: The native C++ implementation of this method defines a default argument value. In the documentation generated for different libSBML language bindings, you may or may not see corresponding arguments in the method declarations. For example, in Java and C#, a default argument is handled by declaring two separate methods, with one of them having the argument and the other one lacking the argument. However, the libSBML documentation will be identical for both methods. Consequently, if you are reading this and do not see an argument even though one is described, please look for descriptions of other variants of this method near where this one appears in the documentation.

def libsbml.SpeciesReference.appendAnnotation	(	self,
		args
	)

Python method signature(s):

appendAnnotation(XMLNode annotation)    int
appendAnnotation(string annotation)    int

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

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.

Parameters:

annotation

an XML structure that is to be copied and appended to the content of the 'annotation' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: setAnnotation(); setAnnotation()

Method variant with the following signature:

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.

Parameters:

annotation

an XML string that is to be copied and appended to the content of the 'annotation' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: setAnnotation(); setAnnotation()

Reimplemented from libsbml.SBase.

def libsbml.SBase.appendNotes	(	self,
		args
	)		`[inherited]`

Python method signature(s):

appendNotes(XMLNode notes)    int
appendNotes(string notes)    int

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

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.

Parameters:

notes

an XML string that is to appended to the content of the 'notes' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: getNotesString(); isSetNotes(); setNotes(); setNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

Method variant with the following signature:

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.

Parameters:

notes

an XML node structure that is to appended to the content of the 'notes' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: getNotesString(); isSetNotes(); setNotes(); setNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SpeciesReference.clone ( self )

Python method signature(s):

clone()    SpeciesReference

Creates and returns a deep copy of this SpeciesReference instance.

Returns:: a (deep) copy of this SpeciesReference.

Reimplemented from libsbml.SBase.

def libsbml.SpeciesReference.createStoichiometryMath ( self )

Python method signature(s):

createStoichiometryMath()    StoichiometryMath

Creates a new, empty StoichiometryMath object, adds it to this SpeciesReference, and returns it.

Returns:: the newly created StoichiometryMath object instance

See also:: Reaction.addReactant(); Reaction.addProduct()

def libsbml.SBase.disablePackage	(	self,
		args
	)		`[inherited]`

Python method signature(s):

disablePackage(string pkgURI, string pkgPrefix)    int

Disables the given SBML Level 3 package

This method enables or disables the specified package on this object and other objects connected by child-parent links in the same SBMLDocument object.

Parameters:

	pkgURI	the URI of the package
	pkgPrefix	the XML prefix of the package

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.enablePackage	(	self,
		args
	)		`[inherited]`

Python method signature(s):

enablePackage(string pkgURI, string pkgPrefix, bool flag)    int

Enables or disables the given SBML Level 3 package

This method enables or disables the specified package on this object and other objects connected by child-parent links in the same SBMLDocument object.

Parameters:

	pkgURI	the URI of the package
	pkgPrefix	the XML prefix of the package
	flag	whether to enable (`true`) or disable (`false`) the package

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.getAncestorOfType	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getAncestorOfType(int type, string pkgName = "core")    SBase
getAncestorOfType(int type)    SBase
getAncestorOfType(int type, string pkgName = "core")    SBase
getAncestorOfType(int type)    SBase

Returns the first ancestor object that has the given SBML type code.

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. If the optional argument pkgName is given, it will cause the search to be limited to the SBML Level 3 package given.

Parameters:

	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

Returns:: the ancestor SBML object of this SBML object that corresponds to the given SBML object type code, or None if no ancestor exists.

Documentation note:: The native C++ implementation of this method defines a default argument value. In the documentation generated for different libSBML language bindings, you may or may not see corresponding arguments in the method declarations. For example, in Java and C#, a default argument is handled by declaring two separate methods, with one of them having the argument and the other one lacking the argument. However, the libSBML documentation will be identical for both methods. Consequently, if you are reading this and do not see an argument even though one is described, please look for descriptions of other variants of this method near where this one appears in the documentation.

def libsbml.SBase.getAnnotation ( self ) [inherited]

Python method signature(s):

getAnnotation()    XMLNode

Returns the content of the 'annotation' subelement of this object as a tree of XMLNode objects.

Whereas the SBML '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.

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.

Returns:: the annotation of this SBML object as a tree of XMLNode objects.

See also:: getAnnotationString(); isSetAnnotation(); setAnnotation(); setAnnotation(); appendAnnotation(); appendAnnotation(); unsetAnnotation()

def libsbml.SBase.getAnnotationString ( self ) [inherited]

Python method signature(s):

getAnnotationString()    string

Returns the content of the 'annotation' subelement of this object as a character string.

Whereas the SBML '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.

The annotations returned by this method will be in string form.

Returns:: the annotation of this SBML object as a character string.

See also:: getAnnotation(); isSetAnnotation(); setAnnotation(); setAnnotation(); appendAnnotation(); appendAnnotation(); unsetAnnotation()

def libsbml.SBase.getColumn ( self ) [inherited]

Python method signature(s):

getColumn()    long

Returns the column number on which this object first appears in the XML representation of the SBML document.

Returns:: the column number of this SBML object.

Note:: The column number for each construct in an SBML model is set upon reading the model. The accuracy of the column number depends on the correctness of the XML representation of the model, and on the particular XML parser library being used. The former limitation relates to the following problem: if the model is actually invalid XML, then the parser may not be able to interpret the data correctly and consequently may not be able to establish the real column number. The latter limitation is simply that different parsers seem to have their own accuracy limitations, and out of all the parsers supported by libSBML, none have been 100% accurate in all situations. (At this time, libSBML supports the use of libxml2, Expat and Xerces.)

See also:: getLine()

def libsbml.SpeciesReference.getConstant ( self )

Python method signature(s):

getConstant()    bool

Get the value of the 'constant' attribute.

Returns:: the value of the 'constant' attribute of this SpeciesReference.

def libsbml.SBase.getCVTerm	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getCVTerm(long n)    CVTerm

Returns the nth CVTerm in the list of CVTerms of this SBML object.

Parameters:

n

long the index of the CVTerm to retrieve

Returns:: the nth CVTerm in the list of CVTerms for this SBML object.

def libsbml.SBase.getCVTerms ( self ) [inherited]

Python method signature(s):

getCVTerms()    CVTermList

Get the CVTermList of CVTerm objects in this SBase.

Returns:: the CVTermList for this SBase.

def libsbml.SpeciesReference.getDenominator ( self )

Python method signature(s):

getDenominator()    int

Get the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1.

The '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 structure. 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).

Returns:: the value of the 'denominator' attribute of this SpeciesReference.

def libsbml.SBase.getElementByMetaId	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getElementByMetaId(string metaid)    SBase

Returns the first child element it can find with the given metaid, or None if no such object is found.

Parameters:

metaid

string representing the 'metaid' attribute value of the object to find

Returns:: pointer to the first element found with the given meta-identifier.

Reimplemented in libsbml.ListOf, libsbml.Model, libsbml.SBMLDocument, libsbml.UnitDefinition, libsbml.Reaction, libsbml.KineticLaw, and libsbml.Event.

def libsbml.SBase.getElementBySId	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getElementBySId(string id)    SBase

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.

Parameters:

id

string representing the 'id' attribute value of the object to find

Returns:: pointer to the first element found with the given identifier.

Reimplemented in libsbml.ListOf, libsbml.Model, libsbml.SBMLDocument, libsbml.UnitDefinition, libsbml.ListOfUnitDefinitions, libsbml.ListOfLocalParameters, libsbml.Reaction, libsbml.KineticLaw, and libsbml.Event.

def libsbml.SpeciesReference.getElementName ( self )

Python method signature(s):

getElementName()    string

Returns the XML element name of this object, which for SpeciesReference, is always 'speciesReference'.

Returns:: the name of this element, i.e., 'speciesReference'.

Reimplemented from libsbml.SBase.

def libsbml.SimpleSpeciesReference.getId ( self ) [inherited]

Python method signature(s):

getId()    string

Returns the value of the 'id' attribute of this SimpleSpeciesReference.

Returns:: the id of this SimpleSpeciesReference.

def libsbml.SBase.getLevel ( self ) [inherited]

Python method signature(s):

getLevel()    long

Returns the SBML Level of the SBMLDocument object containing this object.

Returns:: the SBML level of this SBML object.

See also:: getVersion(); getNamespaces(); getPackageVersion()

def libsbml.SBase.getLine ( self ) [inherited]

Python method signature(s):

getLine()    long

Returns the line number on which this object first appears in the XML representation of the SBML document.

Returns:: the line number of this SBML object.

Note:: The line number for each construct in an SBML model is set upon reading the model. The accuracy of the line number depends on the correctness of the XML representation of the model, and on the particular XML parser library being used. The former limitation relates to the following problem: if the model is actually invalid XML, then the parser may not be able to interpret the data correctly and consequently may not be able to establish the real line number. The latter limitation is simply that different parsers seem to have their own accuracy limitations, and out of all the parsers supported by libSBML, none have been 100% accurate in all situations. (At this time, libSBML supports the use of libxml2, Expat and Xerces.)

See also:: getColumn()

def libsbml.SBase.getListOfAllElements ( self ) [inherited]

Python method signature(s):

getListOfAllElements()    SBaseList

def libsbml.SBase.getListOfAllElementsFromPlugins ( self ) [inherited]

Python method signature(s):

getListOfAllElementsFromPlugins()    SBaseList

def libsbml.SBase.getMetaId ( self ) [inherited]

Python method signature(s):

getMetaId()    string

Returns the value of the 'metaid' attribute of this object.

The optional attribute named 'metaid', present on every major SBML component type, is for supporting metadata annotations using RDF (Resource Description Format). The attribute value has the data type XML ID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. (Importantly, this uniqueness criterion applies across any attribute with type XML ID, 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 XML ID.) The 'metaid' value serves to identify a model component for purposes such as referencing that component from metadata placed within 'annotation' subelements.

Returns:: the metaid of this SBML object.

See also:: isSetMetaId(); setMetaId()

def libsbml.SBase.getModel ( self ) [inherited]

Python method signature(s):

getModel()    Model

Returns the Model object in which the current object is located.

Returns:: the parent Model of this SBML object.

See also:: getParentSBMLObject(); getSBMLDocument()

def libsbml.SBase.getModelHistory	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getModelHistory()    ModelHistory
getModelHistory()    ModelHistory

Returns the ModelHistory object, if any, attached to this object.

Returns:: the ModelHistory object attached to this object, or None if none exist.

Note:: In SBML Level 2, model history annotations were only permitted on the Model element. In SBML Level 3, they are permitted on all SBML components derived from SBase.

def libsbml.SimpleSpeciesReference.getName ( self ) [inherited]

Python method signature(s):

getName()    string

Returns the value of the 'name' attribute of this SimpleSpeciesReference.

Returns:: the name of this SimpleSpeciesReference.

def libsbml.SBase.getNamespaces ( self ) [inherited]

Python method signature(s):

getNamespaces()    XMLNamespaces

Returns a list of the XML Namespaces declared on this SBML document.

The SBMLNamespaces object encapsulates SBML Level/Version/namespaces information. It is used to communicate the SBML Level, Version, and (in SBML Level 3) packages used in addition to SBML Level 3 Core.

Returns:: the XML Namespaces associated with this SBML object

See also:: getLevel(); getVersion()

Reimplemented in libsbml.SBMLDocument.

def libsbml.SBase.getNotes ( self ) [inherited]

Python method signature(s):

getNotes()    XMLNode

Returns the content of the 'notes' subelement of this object as a tree of XMLNode objects.

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 '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().

Returns:: the content of the 'notes' subelement of this SBML object as a tree structure composed of XMLNode objects.

See also:: getNotesString(); isSetNotes(); setNotes(); setNotes(); appendNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SBase.getNotesString ( self ) [inherited]

Python method signature(s):

getNotesString()    string

Returns the content of the 'notes' subelement of this object as a string.

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.

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.

Returns:: the content of the 'notes' subelement of this SBML object as a string.

See also:: getNotes(); isSetNotes(); setNotes(); setNotes(); appendNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SBase.getNumCVTerms ( self ) [inherited]

Python method signature(s):

getNumCVTerms()    long

Returns the number of CVTerm objects in the annotations of this SBML object.

Returns:: the number of CVTerms for this SBML object.

def libsbml.SBase.getNumPlugins ( self ) [inherited]

Python method signature(s):

getNumPlugins()    long

Returns the number of plugin objects (extenstion interfaces) for SBML Level 3 package extensions known.

Returns:: the number of plugin objects (extension interfaces) of package extensions known by this instance of libSBML.

def libsbml.SBase.getPackageName ( self ) [inherited]

Python method signature(s):

getPackageName()    string

Returns the name of the SBML Level 3 package in which this element is defined.

Returns:: the name of the SBML package in which this element is defined. The 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.

def libsbml.SBase.getPackageVersion ( self ) [inherited]

Python method signature(s):

getPackageVersion()    long

Returns the Version of the SBML Level 3 package to which this element belongs to.

Returns:: the version of the SBML Level 3 package to which this element belongs. The value 0 will be returned if this element belongs to the SBML Level 3 Core package.

See also:: getLevel(); getVersion()

def libsbml.SBase.getParentSBMLObject	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getParentSBMLObject()    SBase
getParentSBMLObject()    SBase

Returns the parent SBML object containing this object.

This returns the immediately-containing object. This method is convenient when holding an object nested inside other objects in an SBML model.

Returns:: the parent SBML object of this SBML object.

See also:: getSBMLDocument(); getModel()

def libsbml.SBase.getPlugin	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getPlugin(string package)    SBasePlugin
getPlugin(string package)    SBasePlugin
getPlugin(long n)    SBasePlugin
getPlugin(long n)    SBasePlugin

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

getPlugin(long n)

Returns the nth plugin object (extension interface) for an SBML Level 3 package extension.

Parameters:

n

the index of the plugin to return

Returns:: the plugin object (the libSBML extension interface) of a package extension with the given package name or URI.

Method variant with the following signature:

getPlugin(string package)

Returns a plugin object (extension interface) for an SBML Level 3 package extension with the given package name or URI.

Parameters:

package

the name or URI of the package

Returns:: the plugin object (the libSBML extension interface) of a package extension with the given package name or URI.

def libsbml.SBase.getResourceBiologicalQualifier	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getResourceBiologicalQualifier(string resource)    long

Returns the MIRIAM biological qualifier associated with the given resource.

In 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 values whose 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 value whose name begins with BQB_ from the interface class libsbml.

Parameters:

resource string representing the resource; e.g., 'http://www.geneontology.org/GO:0005892'.

Returns:: the qualifier associated with the resource, or BQB_UNKNOWN if the resource does not exist.

Note:: The set of MIRIAM biological qualifiers grows over time, although relatively slowly. The values are up to date with MIRIAM at the time of a given libSBML release. The set of values in list of BQB_ constants defined in libsbml may be expanded in later libSBML releases, to match the values defined by MIRIAM at that later time.

def libsbml.SBase.getResourceModelQualifier	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getResourceModelQualifier(string resource)    long

Returns the MIRIAM model qualifier associated with the given resource.

In 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 values whose 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 value whose name begins with BQM_ from the interface class libsbml.

Parameters:

resource string representing the resource; e.g., 'http://www.geneontology.org/GO:0005892'.

Returns:: the model qualifier typeassociated with the resource, or BQM_UNKNOWN if the resource does not exist.

Note:: The set of MIRIAM model qualifiers grows over time, although relatively slowly. The values are up to date with MIRIAM at the time of a given libSBML release. The set of values in list of BQM_ constants defined in libsbml may be expanded in later libSBML releases, to match the values defined by MIRIAM at that later time.

def libsbml.SBase.getSBMLDocument	(	self,
		args
	)		`[inherited]`

Python method signature(s):

getSBMLDocument()    SBMLDocument
getSBMLDocument()    SBMLDocument

Returns the SBMLDocument object containing this object instance.

LibSBML uses the class SBMLDocument as a top-level container for storing SBML content and data associated with it (such as warnings and error messages). An SBML model in libSBML is contained inside an SBMLDocument object. SBMLDocument corresponds roughly to the class SBML defined in the SBML Level 3 and Level 2 specifications, but it does not have a direct correspondence in SBML Level 1. (But, it is created by libSBML no matter whether the model is Level 1, Level 2 or Level 3.)

This method allows the caller to obtain the SBMLDocument for the current object.

Returns:: the parent SBMLDocument object of this SBML object.

See also:: getParentSBMLObject(); getModel()

def libsbml.SBase.getSBOTerm ( self ) [inherited]

Python method signature(s):

getSBOTerm()    int

Returns the integer portion of the value of the 'sboTerm' attribute of this object.

Beginning with SBML Level 2 Version 3, objects derived from SBase have an optional attribute named 'sboTerm' for supporting the use of the Systems Biology Ontology. In SBML proper, the data type of the attribute is a string of the form 'SBO:NNNNNNN', where 'NNNNNNN' is a seven digit integer number; libSBML simplifies the representation by only storing the 'NNNNNNN' integer portion. Thus, in libSBML, the 'sboTerm' attribute on SBase has data type int, and SBO identifiers are stored simply as integers. (For convenience, libSBML offers methods for returning both the integer form and a text-string form of the SBO identifier.)

SBO terms are a type of optional annotation, and each different class of SBML object derived from SBase imposes its own requirements about the values permitted for 'sboTerm'. Please consult the SBML Level 2 Version 4 specification for more information about the use of SBO and the 'sboTerm' attribute.

Returns:: the value of the 'sboTerm' attribute as an integer, or -1 if the value is not set.

def libsbml.SBase.getSBOTermID ( self ) [inherited]

Python method signature(s):

getSBOTermID()    string

Returns the string representation of the 'sboTerm' attribute of this object.

Beginning with SBML Level 2 Version 3, objects derived from SBase have an optional attribute named 'sboTerm' for supporting the use of the Systems Biology Ontology. In SBML proper, the data type of the attribute is a string of the form 'SBO:NNNNNNN', where 'NNNNNNN' is a seven digit integer number; libSBML simplifies the representation by only storing the 'NNNNNNN' integer portion. Thus, in libSBML, the 'sboTerm' attribute on SBase has data type int, and SBO identifiers are stored simply as integers. This method returns the entire SBO identifier as a text string in the form 'SBO:NNNNNNN'.

SBO terms are a type of optional annotation, and each different class of SBML object derived from SBase imposes its own requirements about the values permitted for 'sboTerm'. Please consult the SBML Level 2 Version 4 specification for more information about the use of SBO and the 'sboTerm' attribute.

Returns:: the value of the 'sboTerm' attribute as a string (its value will be of the form 'SBO:NNNNNNN'), or an empty string if the value is not set.

def libsbml.SimpleSpeciesReference.getSpecies ( self ) [inherited]

Python method signature(s):

getSpecies()    string

Get the value of the 'species' attribute.

Returns:: the value of the attribute 'species' for this SimpleSpeciesReference.

def libsbml.SpeciesReference.getStoichiometry ( self )

Python method signature(s):

getStoichiometry()    float

Get the value of the 'stoichiometry' attribute.

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.

Returns:: the value of the (scalar) 'stoichiometry' attribute of this SpeciesReference.

See also:: getStoichiometryMath()

def libsbml.SpeciesReference.getStoichiometryMath	(	self,
		args
	)

Python method signature(s):

getStoichiometryMath()    StoichiometryMath
getStoichiometryMath()    StoichiometryMath

Get the content of the 'stoichiometryMath' subelement as an ASTNode tree.

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).

Returns:: the content of the 'stoichiometryMath' subelement of this SpeciesReference.

def libsbml.SpeciesReference.getTypeCode ( self )

Python method signature(s):

getTypeCode()    int

Returns the libSBML type code for this SBML object.

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_.

Returns:: the SBML type code for this object, or SBML_UNKNOWN (default).

See also:: getElementName()

Reimplemented from libsbml.SBase.

def libsbml.SBase.getVersion ( self ) [inherited]

Python method signature(s):

getVersion()    long

Returns the Version within the SBML Level of the SBMLDocument object containing this object.

Returns:: the SBML version of this SBML object.

See also:: getLevel(); getNamespaces()

def libsbml.SpeciesReference.hasRequiredAttributes ( self )

Python method signature(s):

hasRequiredAttributes()    bool

Predicate returning true if all the required attributes for this SpeciesReference object have been set.

Note:

The required attributes for a SpeciesReference object are:

'species'
'constant' (only available SBML Level 3)

Returns:: a boolean value indicating whether all the required attributes for this object have been defined.

def libsbml.SBase.hasValidLevelVersionNamespaceCombination ( self ) [inherited]

Python method signature(s):

hasValidLevelVersionNamespaceCombination()    bool

def libsbml.SpeciesReference.initDefaults ( self )

Python method signature(s):

initDefaults()

Initializes the fields of this SpeciesReference object to 'typical' default values.

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:

Sets attribute 'stoichiometry' to 1.0
(Applies to Level 1 models only) Sets attribute 'denominator' to 1

See also:: getDenominator(); setDenominator(); getStoichiometry(); setStoichiometry(); getStoichiometryMath(); setStoichiometryMath()

def libsbml.SimpleSpeciesReference.isModifier ( self ) [inherited]

Python method signature(s):

isModifier()    bool

Predicate returning true if this is a ModifierSpeciesReference.

Returns:: true if this SimpleSpeciesReference's subclass is ModiferSpeciesReference, false if it is a plain SpeciesReference.

def libsbml.SBase.isPackageEnabled	(	self,
		args
	)		`[inherited]`

Python method signature(s):

isPackageEnabled(string pkgName)    bool

Predicate returning true if the given SBML Level 3 package is enabled with this object.

The search ignores the package version.

Parameters:

pkgName

the name of the package

Returns:: true if the given package is enabled within this object, false otherwise.

See also:: isPackageURIEnabled()

def libsbml.SBase.isPackageURIEnabled	(	self,
		args
	)		`[inherited]`

Python method signature(s):

isPackageURIEnabled(string pkgURI)    bool

Predicate returning true if an SBML Level 3 package with the given URI is enabled with this object.

Parameters:

pkgURI

the URI of the package

Returns:: true if the given package is enabled within this object, false otherwise.

See also:: isPackageEnabled()

def libsbml.SBase.isPkgEnabled	(	self,
		args
	)		`[inherited]`

Python method signature(s):

isPkgEnabled(string pkgName)    bool

Predicate returning true if the given SBML Level 3 package is enabled with this object.

The search ignores the package version.

Parameters:

pkgName

the name of the package

Returns:: true if the given package is enabled within this object, false otherwise.

See also:: isPkgURIEnabled()

Deprecated:: Replaced in libSBML 5.2.0 by isPackageEnabled()

def libsbml.SBase.isPkgURIEnabled	(	self,
		args
	)		`[inherited]`

Python method signature(s):

isPkgURIEnabled(string pkgURI)    bool

Predicate returning true if an SBML Level 3 package with the given URI is enabled with this object.

Parameters:

pkgURI

the URI of the package

Returns:: true if the given package is enabled within this object, false otherwise.

See also:: isPkgEnabled()

Deprecated:: Replaced in libSBML 5.2.0 by isPackageURIEnabled()

def libsbml.SBase.isSetAnnotation ( self ) [inherited]

Python method signature(s):

isSetAnnotation()    bool

Predicate returning true if this object's 'annotation' subelement exists and has content.

Whereas 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.

Returns:: true if a 'annotation' subelement exists, false otherwise.

See also:: getAnnotation(); getAnnotationString(); setAnnotation(); setAnnotation(); appendAnnotation(); appendAnnotation(); unsetAnnotation()

def libsbml.SpeciesReference.isSetConstant ( self )

Python method signature(s):

isSetConstant()    bool

Predicate returning true if this SpeciesReference's 'constant' attribute is set

Returns:: true if the 'constant' attribute of this SpeciesReference is set, false otherwise.

def libsbml.SimpleSpeciesReference.isSetId ( self ) [inherited]

Python method signature(s):

isSetId()    bool

Predicate returning true if this SimpleSpeciesReference's 'id' attribute is set.

Returns:: true if the 'id' attribute of this SimpleSpeciesReference is set, false otherwise.

def libsbml.SBase.isSetMetaId ( self ) [inherited]

Python method signature(s):

isSetMetaId()    bool

Predicate returning true if this object's 'metaid' attribute is set.

The optional attribute named 'metaid', present on every major SBML component type, is for supporting metadata annotations using RDF (Resource Description Format). The attribute value has the data type XML ID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. (Importantly, this uniqueness criterion applies across any attribute with type XML ID, 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 XML ID.) The 'metaid' value serves to identify a model component for purposes such as referencing that component from metadata placed within 'annotation' subelements.

Returns:: true if the 'metaid' attribute of this SBML object is set, false otherwise.

See also:: getMetaId(); setMetaId()

def libsbml.SBase.isSetModelHistory ( self ) [inherited]

Python method signature(s):

isSetModelHistory()    bool

Predicate returning true if this object has a ModelHistory object attached to it.

Returns:: true if the ModelHistory of this object is set, false otherwise.

Note:: In SBML Level 2, model history annotations were only permitted on the Model element. In SBML Level 3, they are permitted on all SBML components derived from SBase.

def libsbml.SimpleSpeciesReference.isSetName ( self ) [inherited]

Python method signature(s):

isSetName()    bool

Predicate returning true if this SimpleSpeciesReference's 'name' attribute is set.

Returns:: true if the 'name' attribute of this SimpleSpeciesReference is set, false otherwise.

def libsbml.SBase.isSetNotes ( self ) [inherited]

Python method signature(s):

isSetNotes()    bool

Predicate returning true if this object's 'notes' subelement exists and has content.

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.

Returns:: true if a 'notes' subelement exists, false otherwise.

See also:: getNotes(); getNotesString(); setNotes(); setNotes(); appendNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SBase.isSetSBOTerm ( self ) [inherited]

Python method signature(s):

isSetSBOTerm()    bool

Predicate returning true if this object's 'sboTerm' attribute is set.

Returns:: true if the 'sboTerm' attribute of this SBML object is set, false otherwise.

def libsbml.SimpleSpeciesReference.isSetSpecies ( self ) [inherited]

Python method signature(s):

isSetSpecies()    bool

Predicate returning true if this SimpleSpeciesReference's 'species' attribute is set.

Returns:: true if the 'species' attribute of this SimpleSpeciesReference is set, false otherwise.

def libsbml.SpeciesReference.isSetStoichiometry ( self )

Python method signature(s):

isSetStoichiometry()    bool

Predicate returning true if this SpeciesReference's 'stoichiometry' attribute is set.

Returns:: true if the 'stoichiometry' attribute of this SpeciesReference is set, false otherwise.

def libsbml.SpeciesReference.isSetStoichiometryMath ( self )

Python method signature(s):

isSetStoichiometryMath()    bool

Predicate returning true if this SpeciesReference's 'stoichiometryMath' subelement is set

Returns:: true if the 'stoichiometryMath' subelement of this SpeciesReference is set, false otherwise.

def libsbml.SBase.matchesSBMLNamespaces	(	self,
		args
	)		`[inherited]`

Python method signature(s):

matchesSBMLNamespaces(SBase sb)    bool

Returns true if this object's set of XML namespaces are the same as the given object's XML namespaces.

Parameters:

sb

an object to compare with respect to namespaces

Returns:: boolean, true if this object's collection of namespaces is the same as sb's, false otherwise.

def libsbml.SBase.removeFromParentAndDelete ( self ) [inherited]

Python method signature(s):

removeFromParentAndDelete()    int

Removes itself from its parent. If the parent was storing it as a pointer, it is deleted. If not, it is simply cleared (as in ListOf objects). Pure virutal, 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.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Reimplemented in libsbml.ListOf, libsbml.Model, libsbml.KineticLaw, libsbml.Trigger, libsbml.Delay, libsbml.Priority, and libsbml.StoichiometryMath.

def libsbml.SBase.renameMetaIdRefs	(	self,
		args
	)		`[inherited]`

Python method signature(s):

renameMetaIdRefs(string oldid, string newid)

Renames all the MetaIdRef attributes on this element.

This method works by looking at all meta-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.

Parameters:

	oldid	the old identifier
	newid	the new identifier

def libsbml.SimpleSpeciesReference.renameSIdRefs	(	self,
		args
	)		`[inherited]`

Python method signature(s):

renameSIdRefs(string oldid, string newid)

Renames all the SIdRef attributes on this element, including any found in MathML

Reimplemented from libsbml.SBase.

def libsbml.SBase.renameUnitSIdRefs	(	self,
		args
	)		`[inherited]`

Python method signature(s):

renameUnitSIdRefs(string oldid, string newid)

Renames all the UnitSIdRef attributes on this element.

This method works by looking at all unit identifier attribute values (including, if appropriate, inside math formulas), comparing the unit 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.

Parameters:

	oldid	the old identifier
	newid	the new identifier

Reimplemented in libsbml.Model, libsbml.FunctionDefinition, libsbml.Compartment, libsbml.Species, libsbml.Parameter, libsbml.InitialAssignment, libsbml.Rule, libsbml.Constraint, libsbml.KineticLaw, libsbml.EventAssignment, libsbml.Trigger, libsbml.Delay, libsbml.Priority, and libsbml.StoichiometryMath.

def libsbml.SpeciesReference.setAnnotation	(	self,
		args
	)

Python method signature(s):

setAnnotation(XMLNode annotation)    int
setAnnotation(string annotation)    int

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

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().

Parameters:

annotation

an XML structure that is to be used as the content of the 'annotation' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

See also:: appendAnnotation(); appendAnnotation()

Method variant with the following signature:

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().

Parameters:

annotation

an XML string that is to be used as the content of the 'annotation' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: appendAnnotation(); appendAnnotation()

Reimplemented from libsbml.SBase.

def libsbml.SpeciesReference.setConstant	(	self,
		args
	)

Python method signature(s):

setConstant(bool flag)    int

Sets the 'constant' attribute of this SpeciesReference to the given boolean flag.

Parameters:

flag

a boolean, the value for the 'constant' attribute of this SpeciesReference instance

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SpeciesReference.setDenominator	(	self,
		args
	)

Python method signature(s):

setDenominator(int value)    int

Set the value of the 'denominator' attribute, for the case of a rational-numbered stoichiometry or a model in SBML Level 1.

The '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 structure. 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).

Parameters:

value

the scalar value

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

def libsbml.SimpleSpeciesReference.setId	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setId(string sid)    int

Sets the value of the 'id' attribute of this SimpleSpeciesReference.

The string sid is copied. Note that SBML has strict requirements for the syntax of identifiers. The following is a summary of the definition of the SBML identifier type SId, which defines the permitted syntax of identifiers. We express the syntax using an extended form of BNF notation:

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. In addition, there are a few conditions for the uniqueness of identifiers in an SBML model. Please consult the SBML specifications for the exact formulations.

Parameters:

sid

the string to use as the identifier of this SimpleSpeciesReference

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.setMetaId	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setMetaId(string metaid)    int

Sets the value of the 'metaid' attribute of this object.

The string metaid is copied. The value of metaid must be an identifier conforming to the syntax defined by the XML 1.0 data type ID. Among other things, this type requires that a value is unique among all the values of type XML ID in an SBMLDocument. Although SBML only uses XML ID for the 'metaid' attribute, callers 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.

Parameters:

metaid

the identifier string to use as the value of the 'metaid' attribute

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: getMetaId(); isSetMetaId()

def libsbml.SBase.setModelHistory	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setModelHistory(ModelHistory history)    int

Sets the ModelHistory of this object.

The content of history is copied, and this object's existing model history content is deleted.

Parameters:

history

ModelHistory of this object.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Note:: In SBML Level 2, model history annotations were only permitted on the Model element. In SBML Level 3, they are permitted on all SBML components derived from SBase.

def libsbml.SimpleSpeciesReference.setName	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setName(string name)    int

Sets the value of the 'name' attribute of this SimpleSpeciesReference.

The string in name is copied.

Parameters:

name

the new name for the SimpleSpeciesReference

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.setNamespaces	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setNamespaces(XMLNamespaces xmlns)    int

Sets the namespaces relevant of this SBML object.

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.

Parameters:

xmlns

the namespaces to set

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

def libsbml.SBase.setNotes	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setNotes(XMLNode notes)    int
setNotes(string notes)    int

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

setNotes(string notes)

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.

Parameters:

notes

an XML string that is to be used as the content of the 'notes' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: getNotesString(); isSetNotes(); setNotes(); appendNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

Method variant with the following signature:

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.

Parameters:

notes

an XML structure that is to be used as the content of the 'notes' subelement of this object

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: getNotesString(); isSetNotes(); setNotes(); appendNotes(); appendNotes(); unsetNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SBase.setSBOTerm	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setSBOTerm(int value)    int
setSBOTerm(string sboid)    int

This method has multiple variants that differ in the arguments they accept. Each is described separately below.

Method variant with the following signature:

setSBOTerm(int value)

Sets the value of the 'sboTerm' attribute.

Beginning with SBML Level 2 Version 3, objects derived from SBase have an optional attribute named 'sboTerm' for supporting the use of the Systems Biology Ontology. In SBML proper, the data type of the attribute is a string of the form 'SBO:NNNNNNN', where 'NNNNNNN' is a seven digit integer number; libSBML simplifies the representation by only storing the 'NNNNNNN' integer portion. Thus, in libSBML, the 'sboTerm' attribute on SBase has data type int, and SBO identifiers are stored simply as integers.

SBO terms are a type of optional annotation, and each different class of SBML object derived from SBase imposes its own requirements about the values permitted for 'sboTerm'. Please consult the SBML Level 2 Version 4 specification for more information about the use of SBO and the 'sboTerm' attribute.

Parameters:

value

the NNNNNNN integer portion of the SBO identifier

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: setSBOTerm()

Method variant with the following signature:

setSBOTerm(string &sboid)

Sets the value of the 'sboTerm' attribute by string.

Beginning with SBML Level 2 Version 3, objects derived from SBase have an optional attribute named 'sboTerm' for supporting the use of the Systems Biology Ontology. In SBML proper, the data type of the attribute is a string of the form 'SBO:NNNNNNN', where 'NNNNNNN' is a seven digit integer number; libSBML simplifies the representation by only storing the 'NNNNNNN' integer portion. Thus, in libSBML, the 'sboTerm' attribute on SBase has data type int, and SBO identifiers are stored simply as integers. This method lets you set the value of 'sboTerm' as a complete string of the form 'SBO:NNNNNNN', whereas setSBOTerm(int value) allows you to set it using the integer form.

SBO terms are a type of optional annotation, and each different class of SBML object derived from SBase imposes its own requirements about the values permitted for 'sboTerm'. Please consult the SBML Level 2 Version 4 specification for more information about the use of SBO and the 'sboTerm' attribute.

Parameters:

sboid

the SBO identifier string of the form 'SBO:NNNNNNN'

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

See also:: setSBOTerm()

def libsbml.SimpleSpeciesReference.setSpecies	(	self,
		args
	)		`[inherited]`

Python method signature(s):

setSpecies(string sid)    int

Sets the 'species' attribute of this SimpleSpeciesReference.

The identifier string passed in sid is copied.

Parameters:

sid

the identifier of a species defined in the enclosing Model's ListOfSpecies.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SpeciesReference.setStoichiometry	(	self,
		args
	)

Python method signature(s):

setStoichiometry (float value)    int

Sets the value of the 'stoichiometry' attribute of this SpeciesReference.

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.

Parameters:

value

the new value of the 'stoichiometry' attribute

Note:: In SBML Level 2, the 'stoichiometryMath' subelement of this SpeciesReference object will be unset because the 'stoichiometry' attribute and the stoichiometryMath' subelement are mutually exclusive.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

def libsbml.SpeciesReference.setStoichiometryMath	(	self,
		args
	)

Python method signature(s):

setStoichiometryMath(StoichiometryMath math)    int

Sets the 'stoichiometryMath' subelement of this SpeciesReference.

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.

Parameters:

math

the StoichiometryMath expression that is to be copied as the content of the 'stoichiometryMath' subelement.

Note:: In SBML Level 2, the 'stoichiometry' attribute of this SpeciesReference object will be unset (isSetStoichiometry() will return 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.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.toSBML ( self ) [inherited]

Python method signature(s):

toSBML()    string

Returns a string consisting of a partial SBML corresponding to just this object.

Returns:: the partial SBML that describes this SBML object.

Warning:: This is primarily provided for testing and debugging purposes. It may be removed in a future version of libSBML.

def libsbml.SBase.unsetAnnotation ( self ) [inherited]

Python method signature(s):

unsetAnnotation()    int

Unsets the value of the 'annotation' subelement of this SBML object.

Whereas 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.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

See also:: getAnnotation(); getAnnotationString(); isSetAnnotation(); setAnnotation(); setAnnotation(); appendAnnotation(); appendAnnotation()

def libsbml.SBase.unsetCVTerms ( self ) [inherited]

Python method signature(s):

unsetCVTerms()    int

Clears the list of CVTerm objects attached to this SBML object.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SimpleSpeciesReference.unsetId ( self ) [inherited]

Python method signature(s):

unsetId()    int

Unsets the value of the 'id' attribute of this SimpleSpeciesReference.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Reimplemented from libsbml.SBase.

def libsbml.SBase.unsetMetaId ( self ) [inherited]

Python method signature(s):

unsetMetaId()    int

Unsets the value of the 'metaid' attribute of this SBML object.

The optional attribute named 'metaid', present on every major SBML component type, is for supporting metadata annotations using RDF (Resource Description Format). The attribute value has the data type XML ID, the XML identifier type, which means each 'metaid' value must be globally unique within an SBML file. (Importantly, this uniqueness criterion applies across any attribute with type XML ID, 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 XML ID.) The 'metaid' value serves to identify a model component for purposes such as referencing that component from metadata placed within 'annotation' subelements.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SBase.unsetModelHistory ( self ) [inherited]

Python method signature(s):

unsetModelHistory()    int

Unsets the ModelHistory object attached to this object.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Note:: In SBML Level 2, model history annotations were only permitted on the Model element. In SBML Level 3, they are permitted on all SBML components derived from SBase.

def libsbml.SimpleSpeciesReference.unsetName ( self ) [inherited]

Python method signature(s):

unsetName()    int

Unsets the value of the 'name' attribute of this SimpleSpeciesReference.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Reimplemented from libsbml.SBase.

def libsbml.SBase.unsetNotes ( self ) [inherited]

Python method signature(s):

unsetNotes()    int

Unsets the value of the 'notes' subelement of this SBML object.

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.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

LIBSBML_OPERATION_SUCCESS

See also:: getNotesString(); isSetNotes(); setNotes(); setNotes(); appendNotes(); appendNotes(); SyntaxChecker.hasExpectedXHTMLSyntax()

def libsbml.SBase.unsetSBOTerm ( self ) [inherited]

Python method signature(s):

unsetSBOTerm()    int

Unsets the value of the 'sboTerm' attribute of this SBML object.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

def libsbml.SpeciesReference.unsetStoichiometry ( self )

Python method signature(s):

unsetStoichiometry()    int

Unsets the 'stoichiometry' attribute of this SpeciesReference.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

Note:: In SBML Level 1, the 'stoichiometry' attribute of this SpeciesReference object will be just reset to a default value (1.0) 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 )

Python method signature(s):

unsetStoichiometryMath()    int

Unsets the 'stoichiometryMath' subelement of this SpeciesReference.

Returns:

integer value indicating success/failure of the function. The possible values returned by this function are:

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.

Note:: In SBML Level 2, the 'stoichiometry' attribute of this SpeciesReference object will be reset to a default value (1.0) if the 'stoichiometry' attribute has not been set.

libsbml.SpeciesReference Class Reference

Detailed Description

SpeciesReference in SBML Level 2

SpeciesReference in SBML Level 3

Public Member Functions

Member Function Documentation