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Parameter Object

A parameter object represents a parameter, which is a value that typically remains constant during a simulation. For example, you use parameters to define reaction rate constants. In some circumstances it is useful to allow parameter values to vary. In these cases you can specify a parameter as nonconstant.

For information about...See...
Creating and adding a parameter to a modeladdparameter
Methods and properties of a parameterparameter object

Scope of Parameter Objects

When you create a parameter, you scope it to either a model or a reaction.

Parameters Scoped to a Model

Parameters scoped to a model can be used (or referenced) by any expression (reaction, rule, or event) in the model.

Parameters Scoped to a Reaction

Parameters scoped to a reaction can be used (or referenced) by only the reaction rate expression.

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