File: SUBMX.FT of Tape: Various/ETH/eth11-2
(Source file text)
C C .................................................................. C C SUBROUTINE SUBMX C C PURPOSE C BASED ON VECTOR S DERIVED FROM SUBROUTINE SUBST OR ABSNT, C THIS SUBROUTINE COPIES FROM A LARGER MATRIX OF OBSERVATION C DATA A SUBSET MATRIX OF THOSE OBSERVATIONS WHICH HAVE C SATISFIED CERTAIN CONDITION. THIS SUBROUTINE IS NORMALLY C USED PRIOR TO STATISTICAL ANALYSES (E.G., MULTIPLE REGRES- C SION, FACTOR ANALYSIS). C C USAGE C CALL SUBMX (A,D,S,NO,NV,N) C C DESCRIPTION OF PARAMETERS C A - INPUT MATRIX OF OBSERVATIONS, NO BY NV. C D - OUTPUT MATRIX OF OBSERVATIONS, N BY NV. C S - INPUT VECTOR OF LENGTH NO CONTAINING THE CODES DERIVED C FROM SUBROUTINE SUBST OR ABSNT. C NO - NUMBER OF OBSERVATIONS. NO MUST BE > OR = TO 1. C NV - NUMBER OF VARIABLES. C N - OUTPUT VARIABLE CONTAINING THE NUMBER OF NON-ZERO CODES C IN VECTOR S. C C REMARKS C MATRIX D CAN BE IN THE SAME LOCATION AS MATRIX A. C C SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED C NONE C C METHOD C IF S(I) CONTAINS A NON-ZERO CODE, I-TH OBSERVATION IS C COPIED FROM THE INPUT MATRIX TO THE OUTPUT MATRIX. C C .................................................................. C SUBROUTINE SUBMX (A,D,S,NO,NV,N) DIMENSION A(1),D(1),S(1) C L=0 LL=0 DO 20 J=1,NV DO 15 I=1,NO L=L+1 IF(S(I)) 15, 15, 10 10 LL=LL+1 D(LL)=A(L) 15 CONTINUE 20 CONTINUE C C COUNT NON-ZERO CODES IN VECTOR S C N=0 DO 30 I=1,NO IF(S(I)) 30, 30, 25 25 N=N+1 30 CONTINUE C RETURN END