NX Nastran DMAP Programmer's Guide - Kxcad.net

EXIT $
ENDIF $
IF (NOADD < -1) THEN
ADD KAA,KAAX/KAANEW $
EQUIVX KAANEW/KAA/ALWAYS $
ENDIF $
Option P1 = 25
MATMOD
Matrix modification
Generate vectors that have 1.0 corresponding to each null row and null column in I1,
I2, and I3 simultaneously.
Format:
MATMOD I1,I2,I3,,,/O1,O2/25/S,N,NOOUT/NMATX/
S,N,NRNENC///S,N,SYM $
Input Data Blocks:
I1, I2, I3 Square, commensurate matrices. (Real or complex).
Output Data Blocks:
O1 Vector that has 1.0 corresponding to each null row in I1, I2, and I3
simultaneously. See Remark 1.
O2 Vector that has 1.0 corresponding to each null column in I1, I2, and I3
simultaneously.
Parameters:
NOOUT Output-integer. Set to -1 if both output vectors are null, set to zero
otherwise.
NMATX Input-integer-default=1. Number of input matrices to be used for
search, starting from the first input.
NRNENC Output-integer. Set to -1 if number of null rows does not equal the
number of null columns; otherwise zero.
SYM Output-integer. Set to -1 if I1, I2, and I3 are symmetric; otherwise zero.
See Remark 2.
Remarks:
1. Any two input matrices may be purged.
2. If I1, I2, and I3 are symmetric, then O2 is purged.
Example:
Remove null rows and columns from matrix A.
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