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Simile includes a scripting language that provides control of all
functions for model loading and execution. The objective is to allow
multiple simulations using one or more models, with different parameters,
time step settings and so forth for each run. The results can be recorded
to a text file, for later analysis, or processed in the script. Several
different approaches to meeting this need have been considered, including
providing a specific graphic interface such as a new run control. We
concluded that scripting allowed the most flexibility and encouraged users
to find applications beyond those which we have initially considered.
Commands are provided to control key parts (model window, run control
and data table) of the Simile user interface. (Simile is hidden by
default.) Program objects are created that have commands (methods) that
generally correspond to menu commands or tool buttons in the interactive
Typically, the script interface to Simile is accessed by running the
SimileScript application that is provided with Simile. A program object to
control the model window is created and then used to load a model and
scenario file. A run control object is then created to set time-steps, how
long to run the model for, etc, and a data table control object is created
to record variables. At the end of the simulation the data table object is
used to write values to a file.
The script interface to Simile is accessed under Windows by running the
SimileScript application that is provided with Simile. Under Linux
and MacOS-X use the wish application in the Simile distribution and
follow the instructions as for scripting from
other interpreters . Scripts can be pasted in to the window or loaded
via the File>Source menu item. Commands can also be added one at a time.
This can be useful to explore the script interface capablities. Some
example scripts are included below.
Simile script is an extension to TclTk and the full functionality is
available to those that want to use it (see http://www.tcl.tk/).