NUMCMP

NUMCMP

NUMCMP, Label
Compresses the numbering of defined items.

PREP7: Database

Label

Items to be compressed:

NODE	—	Node numbers
ELEM	—	Element numbers
KP	—	Keypoint numbers
LINE	—	Line numbers
AREA	—	Area numbers
VOLU	—	Volume numbers
MAT	—	Material numbers
TYPE	—	Element type numbers
REAL	—	Real constant numbers
CP	—	Coupled set numbers
SECN	—	Section numbers
CE	—	Constraint equation numbers
ALL	—	All item numbers

Notes

The NUMCMP command effectively compresses out unused item numbers by renumbering all the items, beginning with one and continuing throughout the model. The renumbering order follows the initial item numbering order (that is, compression lowers the maximum number by "sliding" numbers down to take advantage of unused or skipped numbers). All defined items are renumbered, regardless of whether or not they are actually used or selected. Applicable related items are also checked for renumbering as described for the merge operation (NUMMRG).

Compressing material numbers (NUMCMP,ALL or NUMCMP,MAT) does not update the material number referenced by either of the following:

A temperature-dependent convection or surface-to-surface radiation load (SF, SFE, SFL, SFA)
Real constants for multi-material elements (such as SOLID65)

Compression is usually not required unless memory space is limited and there are large gaps in the numbering sequence.

Menu Paths

Main Menu>Preprocessor>Numbering Ctrls>Compress Numbers