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SUBROUTINE CONCLS (ZD,NDP)
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 GENERATE CONTOUR LEVELS BASED ON THE INPUT DATA
C
DIMENSION ZD(1)
C
C
COMMON /CONRA1/ CL(30) ,NCL ,OLDZ ,PV(210) ,
1 FINC ,HI ,FLO
COMMON /CONRA2/ REPEAT ,EXTRAP ,PER ,MESS ,
1 ISCALE ,LOOK ,PLDVLS ,GRD ,
2 CINC ,CHILO ,CON ,LABON ,
3 PMIMX ,SCALE ,FRADV ,EXTRI ,
4 BPSIZ ,LISTOP
COMMON /CONRA3/ IREC
COMMON /CONRA4/ NCP ,NCPSZ
COMMON /CONRA5/ NIT ,ITIPV
COMMON /CONRA6/ XST ,YST ,XED ,YED ,
1 STPSZ ,IGRAD ,IG ,XRG ,
2 YRG ,BORD ,PXST ,PYST ,
3 PXED ,PYED ,ITICK
COMMON /CONRA7/ TITLE ,ICNT ,ITLSIZ
COMMON /CONRA8/ IHIGH ,INMAJ ,INLAB ,INDAT ,
1 LEN ,IFMT ,LEND ,
2 IFMTD ,ISIZEP ,INMIN
COMMON /CONRA9/ ICOORD(500),NP ,MXXY ,TR ,
1 BR ,TL ,BL ,CONV ,
2 XN ,YN ,ITLL ,IBLL ,
3 ITRL ,IBRL ,XC ,YC ,
4 ITLOC(210) ,JX ,JY ,ILOC ,
5 ISHFCT ,XO ,YO ,IOC ,NC
COMMON /CONR10/ NT ,NL ,NTNL ,JWIPT ,
1 JWIWL ,JWIWP ,JWIPL ,IPR ,
2 ITPV
COMMON /CONR11/ NREP ,NCRT ,ISIZEL ,
1 MINGAP ,ISIZEM ,
2 TENS
COMMON /CONR12/ IXMAX ,IYMAX ,XMAX ,YMAX
LOGICAL REPEAT ,EXTRAP ,PER ,MESS ,
1 LOOK ,PLDVLS ,GRD ,LABON ,
2 PMIMX ,FRADV ,EXTRI ,CINC ,
3 TITLE ,LISTOP ,CHILO ,CON
COMMON /CONR15/ ISTRNG
CHARACTER*64 ISTRNG
COMMON /CONR16/ FORM
CHARACTER*10 FORM
COMMON /CONR17/ NDASH, IDASH, EDASH
CHARACTER*10 NDASH, IDASH, EDASH
C
C
SAVE
C
C IF NOT USER SET COMPUTE CONTOUR LEVELS
C
IF (.NOT.CON) GO TO 150
C
C OTHERWISE GET HI AND LOW CONTOURS FOR MESSAGE
C
HI = CL(1)
FLO = CL(1)
DO 110 I=1,NCL
IF (HI .GE. CL(I)) GO TO 100
HI = CL(I)
GO TO 110
100 IF (FLO .LE. CL(I)) GO TO 110
FLO = CL(I)
110 CONTINUE
C
C GET INCREMENT IF EQUAL SPACED CONTOURS
C
IF (NCL .NE. 1) GO TO 120
FINC = 0.
RETURN
120 FINC = ABS(CL(1)-CL(2))
IF (NCL .EQ. 2) RETURN
DO 130 I=3,NCL
IF (FINC .NE. ABS(CL(I-1)-CL(I))) GO TO 140
130 CONTINUE
RETURN
140 FINC = -1.
RETURN
C
C FIND HIGHEST AND LOWEST INPUT VALUES
C
150 IF (CHILO) GO TO 180
FLO = ZD(1)
HI = ZD(1)
DO 170 I=2,NDP
IF (FLO .LE. ZD(I)) GO TO 160
FLO = ZD(I)
GO TO 170
160 IF (HI .GE. ZD(I)) GO TO 170
HI = ZD(I)
170 CONTINUE
C
C CALCULATE THE CONTOUR LEVEL INTERVAL
C
180 IF (CINC) GO TO 200
FINC = (HI-FLO)/15.
IF (FINC .NE. 0.) GO TO 190
CALL SETER (' CONCLS - CONSTANT INPUT FIELD',1,1)
RETURN
C
C ROUND FINC TO NICE NUMBER
C
190 P = 10.**(IFIX(ALOG10(FINC)+500.)-500)
FINC = AINT(FINC/P+0.1)*P
C
C ROUND THE LOW VALUE TO START AT A NICE NUMBER
C
200 IF (CHILO) GO TO 210
FLO = AINT(FLO/FINC)*FINC
C
C COMPUTE THE CONTOUR LEVELS
C
C TEST IF BREAK POINT WITHIN RANGE OF HI TO FLO
C
210 IF (BPSIZ.GE.FLO .AND. BPSIZ.LE.HI) GO TO 240
C
C BREAK POINT OUT OF RANGE SO GENERATE CONTOURS BASED ON FLO
C
DO 220 I=1,30
CV = FLO+FLOAT(I-1)*FINC
ICUR = I
CL(I) = CV
IF (CV .GE. HI) GO TO 230
220 CONTINUE
230 NCL = ICUR
HI = CV
RETURN
C
C BREAK POINT WITHIN RANGE SO BASE CONTOURS ON IT
C
240 DO 250 I=1,30
CV = BPSIZ-FLOAT(I-1)*FINC
IND = (30-I)+1
CL(IND) = CV
ICUR = I
IF (CV .LE. FLO) GO TO 260
250 CONTINUE
C
C PUT THE CONTOURS IN THE CORRECT ORDER
C
260 DO 270 I=1,ICUR
IND = (30-ICUR)+I
CL(I) = CL(IND)
270 CONTINUE
C
C ADD THE GREATER THAN BREAK POINT CONTOURS
C
IEND = 30-ICUR
ISAV = ICUR+1
DO 280 I=1,IEND
CV = BPSIZ+FLOAT(I)*FINC
CL(ISAV) = CV
ISAV = ISAV+1
IF (CV .GE. HI) GO TO 290
280 CONTINUE
C
C SET NUMBER OF CONTOUR LEVELS AND UPDATE THE HIGH VALUE
C
290 NCL = ISAV-1
HI = CV
RETURN
END
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