error in running a SMBL file with SimBiology

I'm trying to run this model with SimBiology but see an error message.

BIOMD0000000268_url.xml

SBML L2V4 representation of Reed2008_Glutathione_Metabolism

Reed2008_Glutathione_Metabolism | BioModels (ebi.ac.uk)

"piecewise" is a function in matlab but it seems SimBiology model bulider recognizes it as a variable... Any idea?

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RULE

Aminoacid_input = piecewise(breakfast,and(le(7,daytime),le(daytime,10)),lunch,and(le(12,daytime),le(daytime,15)),dinner,and(le(18,daytime),le(daytime,21)),fasting)

error message: "Rule include varaibles that are unidentified." with red higllight for "piecewise"

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Answer 1

[Jeremy Huard]

Hi @Youngjae You,

the piecewise.m file will need to be either in the Current folder or anywhere on your MATLAB Path for SimBiology to use it.

Please note that there is a piecewise function in the Symbolic Math Toolbox but it only supports symbolic variables and will not work in this case.

In case you need a definition of the piecewise function, you could use the one attached.

Best,

Jérémy

[Youngjae You]

That worked. Thanks Jeremy!