Material Group Indicator Variables

These variables make it possible to identify groups of geometric entities share material property expressions. There is a variable for each geometric entity level, and they evaluate to different (but arbitrary) integers on different groups of domains where material property expressions are the same within each group. The following variables are available:

•	material.domain

•	material.boundary

•	material.edge

•	material.point

•	material.entity, which is defined on all entity levels.

The applicable variables (except material.entity) are available for postprocessing under Model>Material in the lists of predefined quantities for expressions in plots, for example.

These variables are useful for smoothing plot data across entity boundaries within the group but not across groups with different materials. The option Inside material domains available in the Smoothing list in quality settings for plots uses these variables. See Entering Quality Settings for Plot Settings Windows.