Operate on particle traces.

Each trace records and stores a the position and velocity of a particle as the model progresses. The interval is controlled by the trace interval command. Traces are created using the trace keyword applied to a specific data type (for example zone trace or ball trace).

Trace data is stored in a temporary file while the model is open, and this data is transferred to the save file when the model is saved.

Trace Commands

trace delete
trace export
trace interval
trace list
trace name label
trace purge
trace results