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There are different ways to represent your model. First thing I would do it run it through the sbml.org validator and check the error messages.

Herbert Sauro

-----Original Message-----
From: sbml-discuss-bounces@caltech.edu on behalf of Delboy
Sent: Mon 3/5/2007 9:59 AM
To: sbml-discuss@caltech.edu
Cc:
Subject: [sbml-discuss] Handwritten sbml model. Please look.


Hi, I have a model described below. I've tried writing it out by hand in sbml xml. Could you take a look and tell me whats wrong with it?

The model is one of a single water tank(One), with an input(u) and an output(k*x1) of water.



Input: u --> Tank:One --> Output: k*x1



The equation to measure the level of water in the tank is:



x1' = u - k * x1.



Heres the xml i've got so far.





<?xml version="1.0" encoding="UTF-8"?>

<sbml level="2" version="2"xmlns="http://www.sbml.org/sbml/level2/version2">

<model name="SingleCompartmentSystem">
<listOfCompartments>
<compartment id="one"/>
</listOfCompartments>
<listOfSpecies>
<species compartment="one" id="x1'" />
</listOfSpecies>
<listOfReactions>
<reaction id="waterlevel">
<listOfReactants>
</listOfReactants>
<listOfProducts>
<speciesReference species="x1'"
</listOfProducts>
<kineticLaw>
<math xmls="http://www.w3.org/1998/Math/MathML">
<apply>
<minus/>
<apply>
<times/>
<ci> k </ci>
<ci> x1 </ci>
</apply>
</apply>
</math>
<listOfParameter>
<parameter id="k"/>
<parameter id="u"/>
<parameter id="x1"/>
</listOfParameters>
<kineticLaw>
</reaction>
</listOfReactions>
</model>
</sbml>


Thanks for any help.
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