ELTSET

This command creates eltsets or element sets with membership criteria:

1. eq:equal to, gt:greater than, lt:less than, ge: greater than or equal, le: less than or equal to, ne: no equal to value of an element attribute
2. inclusive pset membership - all elements any of whose nodes is in pset
3. exclusive pset membership - all elements all of whose nodes are in pset
4. face pset membership - elements if all nodes of a face are in pset
5. union, inter, not, boolian comparison with other eltsets
6. region or mregion membership
7. quality criteria (volume or aspect ratio)
8. list - list element set members to screen, or list the names of element sets if no 'eltset_name' is specified.
9. write - write element set members to a file
10. delete - remove element set from mesh object

The mregion and region form of this command calculate the center of mass of the element and determine which mregion or region the center lies in. It is possible if the interface surfaces are curved that the center will not lie in the same mregion or region as the vertices. Using itetclr will give the better result.

FORMAT:

eltset/eset_name/element_attribute_name/eq|ne|lt|gt|le|ge/value/
eltset/eset_name/union|inter|not|delete/eset_list/
eltset/eset_name/inclusive|exclusive|face/pset/get/pset_name/
eltset/eset_name/region|mregion/region_name|mregion_name/
eltset/eset_name /volume/ eq|ne|lt|gt|le|ge /value
eltset/eset_name /aspect/ eq|ne|lt|gt|le|ge /value
eltset/eset_name /list
eltset/eset_name /write/file_name[.cellset]/[ascii|binary]
eltset/-all- /write/file_name[.cellset]/[ascii|binary]

EXAMPLES:

eltset/element_set1/itetclr/eq/4
eltset/element_set2/face/pset/get/mypset
eltset/element_set3/inclusive/pset/get/mypset
eltset/element_set4/region/upper
eltset/element_set5/volume/lt/3.0
eltset/element_set5/delete
eltset / /list (list the names of element sets which have been defined)