ifirst, ilast, istride

Sets the node type flag [itp=ifitpdud (21)] to indicate that the set of nodes are treated as invisible, but does not actually remove the nodes.

exclusive | inclusive

exclusive

Any element containing a retained node is retained. Is the default.

inclusive

Any element containing a marked node will be removed.

compress

compress

Removes the invisible nodes (i.e. those nodes whose itp1 value is 21) from the data structure and material-wise resequences all remaining nodes.

zero_volume

zero_volume

Remove elements whose volumes are less than or equal to the specified threshold.

threshold

real

element

Removes all marked elements from the mesh. Marked elements have a negative value for the first entry in the itet vertex list.

tet_list

integers

List of elements.

eset, get, esetname

Named element set.