SpaceTimeFunctions

The SpaceTimeFunctions element is a location for writing user defined functions that specifically depend on the spatial and temporal variables x, y, z, and t. A space time function can use Parameters and Constants by just typing them directly in as a value of the property. However if you are to change the name of the Parameter / Constant used it will not automatically update in the SpaceTimeFunction.

• expression

  This is the user-supplied expression that is a function of x, y, z, or t. It can include any pre-defined Constants, Parameters, or Functions, as well as real numbers.