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Working with external data : Fixed parameters

Fixed parameters

A value of a fixed parameter is not stored with the model, but is supplied by the user when the model runs. The value cannot change during the simulation. To set the value of a fixed parameter use scenario files. These are loaded as the model is built or reset.

Use the "Units" field to define the units as integer (int), real or Boolean (Boolean). An equation can be entered whose dimensions will be used as the dimensions of the parameter data. In Simile v7 or later, the equation also sets its value if no value is entered via the parameter mechanism.

Use the equation dialogue box to designate a variable as a fixed parameter. It is also possible to set the initial value of a compartment in the same way. A fixed parameter is shown on the model diagram with a  paper roll behind its usual appearance.

In: Contents >> Working with equations >> Parameters