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C
C
C +-----------------------------------------------------------------+
C | |
C | Copyright (C) 1986 by UCAR |
C | University Corporation for Atmospheric Research |
C | All Rights Reserved |
C | |
C | NCARGRAPHICS Version 1.00 |
C | |
C +-----------------------------------------------------------------+
C
C
C ---------------------------------------------------------------------
C
FUNCTION AGMAXI (SVAL,ZHGH,ZDRA,NVIZ,IIVZ,NEVZ,IIEZ)
C
DIMENSION ZDRA(1)
C
C The routine AGMAXI returns the maximum value of the elements in ZDRA
C specified by NVIZ, IIVZ, NEVZ, and IIEZ, skipping elements having the
C special value SVAL (or more than ZHGH, if ZHGH is not equal to SVAL).
C
C -- NVIZ is the number of vectors of data stored in ZDRA.
C
C -- IIVZ is the index increment from one data vector to the next.
C
C -- NEVZ is the number of elements per vector to be examined.
C
C -- IIEZ is the index increment from one vector element to the next.
C If IIEZ is 0, the array is ignored and NEVZ is returned.
C
AGMAXI=FLOAT(NEVZ)
IF (IIEZ.EQ.0) RETURN
C
AGMAXI=SVAL
INDZ=1-IIEZ
C
DO 103 I=1,NVIZ
IF (ZHGH.EQ.SVAL) THEN
DO 101 J=1,NEVZ
INDZ=INDZ+IIEZ
IF (ZDRA(INDZ).EQ.SVAL) GO TO 101
IF (AGMAXI.EQ.SVAL) AGMAXI=ZDRA(INDZ)
AGMAXI=AMAX1(AGMAXI,ZDRA(INDZ))
101 CONTINUE
ELSE
DO 102 J=1,NEVZ
INDZ=INDZ+IIEZ
IF (ZDRA(INDZ).EQ.SVAL.OR.ZDRA(INDZ).GT.ZHGH) GO TO 102
IF (AGMAXI.EQ.SVAL) AGMAXI=ZDRA(INDZ)
AGMAXI=AMAX1(AGMAXI,ZDRA(INDZ))
102 CONTINUE
END IF
INDZ=INDZ-NEVZ*IIEZ+IIVZ
103 CONTINUE
C
RETURN
C
END
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