/usr/share/ncarg/tests/thstmv.f is in libncarg-data 6.3.0-6build1.
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C
C Define the error file, the Fortran unit number, the workstation type,
C and the workstation ID to be used in calls to GKS routines.
C
C PARAMETER (IERRF=6, LUNIT=2, IWTYPE=1, IWKID=1) ! NCGM
C PARAMETER (IERRF=6, LUNIT=2, IWTYPE=8, IWKID=1) ! X Windows
C PARAMETER (IERRF=6, LUNIT=2, IWTYPE=11, IWKID=1) ! PDF
C PARAMETER (IERRF=6, LUNIT=2, IWTYPE=20, IWKID=1) ! PostScript
C
PARAMETER (IERRF=6, LUNIT=2, IWTYPE=1, IWKID=1)
C
C Open GKS, open and activate a workstation.
C
CALL GOPKS (IERRF, ISZDM)
CALL GOPWK (IWKID, LUNIT, IWTYPE)
CALL GACWK (IWKID)
CALL HSTMV(IERR)
C
C Deactivate and close the workstation, close GKS.
C
CALL GDAWK (IWKID)
CALL GCLWK (IWKID)
CALL GCLKS
STOP
END
SUBROUTINE HSTMV (IERROR)
C
C PURPOSE To provide a demonstration of the Histogram
C utility when special flagged values occur in
C the input data.
C
C USAGE CALL HSTMV (IERROR)
C
C ARGUMENTS
C
C ON OUTPUT IERROR
C An error flag
C = 0, If the test is successful,
C = 1, otherwise.
C
C I/O If the test is successful, the message
C
C HISTGR TEST SUCCESSFUL . . . SEE PLOT
C TO VERIFY PERFORMANCE
C
C is written on unit 6.
C
C Verify success by examing the plot produced.
C
C PRECISION Single
C
C REQUIRED LIBRARY HISTGR
C FILES
C
C REQUIRED GKS LEVEL 0A
C
C LANGUAGE FORTRAN 77
C
C HISTORY Written by Bob Lackman, October 1993.
C
C ALGORITHM THSTMV computes data and calls HISTGR
C with special values
C
C
C Array DAT1 is filled with values to be used as input for HISTGR
C
PARAMETER ( NDIM=320, NCLS=17, NWRK=374 )
C
C NWRK = NDIM + 3*(NCLS+1)
C
REAL DAT1(NDIM,2), X, WORK(NWRK)
REAL CLASS(NCLS+1)
REAL ARRAY(2)
CHARACTER*1 IFC
C
C Change the Plotchar special character code from a : to a @
C
IFC(1:1) = '@'
CALL PCSETC('FC',IFC)
C
C Change the print font to the high quality filled times roman.
C
CALL PCSETC('FN','times-roman')
C
C Plot 1: IFLAG = 0, input values are sorted into 11 equal classes
C
IFLAG = 0
NCLASS = 11
NPTS = 320
C
DO 105 I=1,NPTS
DO 105 J=1,2
DAT1(I,J)=0.
105 CONTINUE
C
DO 110 I=1,NPTS
X = REAL(I)
DAT1(I,1) = 10. * ALOG10(0.1*X+1.)
110 CONTINUE
C
C Put in some special values
C
DAT1(7,1) = -999.
DAT1(44,1) = -999.
DAT1(79,1) = -999.
C
DO 111 L=200,320
DAT1(L,1) = -999.
111 CONTINUE
C
C (First call HSTOPL('DEF=ON') to activate all default options.)
C
CALL HSTOPL('DE=ON')
C
C Then call HSTOPR to activate special value checking
C
ARRAY(1) = -999.
ARRAY(2) = 1.E-6
CALL HSTOPR('MV=ON',ARRAY,2)
C
C Call HSTOPL with NMV = ON, so normalization is by NPTS-MISS.
C
CALL HSTOPL('NM=ON')
C
C Call HSTOPL with PMV = ON, so NPTS and MISS are written on the plot.
C
CALL HSTOPL('PM=ON')
C
C Turn on the printing of the option list.
C
CALL HSTOPL('LI=ON')
C
C Print a main title.
C
CALL HSTOPC('TIT=ON','Demonstration plot for Histogram. Special v
+alue = -999.',0,0)
CALL HISTGR(DAT1, NDIM, NPTS, IFLAG, CLASS, NCLASS, WORK, NWRK)
C
C Plot 2: IFLAG = 1, input values are sorted into a defined set of
C 8 classes.
C
IFLAG = 1
NCLASS = 8
CLASS(1) = -0.6
DO 550 I = 1,NCLASS
CLASS(I+1) = CLASS(I) + 0.20
550 CONTINUE
C
C Create some input data.
C
X = 0.
DO 500 I = 1,NPTS
DAT1(I,1) = SIN(X)
X = X + .02
500 CONTINUE
C
C Put in some special values
C
DAT1(7,1) = -999.
DAT1(44,1) = -999.
DAT1(79,1) = -999.
C
DO 112 L=100,220
DAT1(L,1) = -999.
112 CONTINUE
C
C (First call HSTOPL('DEF=ON') to activate all default options.)
C
CALL HSTOPL('DE=ON')
C
C Then call HSTOPR to activate special value checking
C
ARRAY(1) = -999.
ARRAY(2) = 1.E-6
CALL HSTOPR('MV=ON',ARRAY,2)
C
C Call HSTOPL with NMV = OFF so normalization is relative to NPTS.
C
CALL HSTOPL('NM=OF')
C
C Call HSTOPL with PMV = ON, so NPTS and MISS are written on the plot.
C
CALL HSTOPL('PM=ON')
C
CALL HSTOPC('TIT=ON','Demonstration plot for Histogram. Normalize
+ to the original number of points.',0,0)
CALL HISTGR(DAT1, NDIM, NPTS, IFLAG, CLASS, NCLASS, WORK, NWRK)
C
C Plot 3: IFLAG = 1, define the CLASS values so as to capture
C the missing value counts.
C
IFLAG = 1
NCLASS = 7
C
C Set the first class bin between -1000. and -0.6. Missing values
C of -999. will fall into this bin.
C
CLASS(1) = -1000.
CLASS(2) = -0.6
DO 555 I = 2,NCLASS
CLASS(I+1) = CLASS(I) + 0.30
555 CONTINUE
NPTS = 320
C
DO 106 I=1,NPTS
DO 106 J=1,2
DAT1(I,J)=0.
106 CONTINUE
C
C Define some data
C
X = 0.
DO 600 I = 1,NPTS
DAT1(I,1) = SIN(X)
X = X + .02
600 CONTINUE
C
C Put in some special values
C
DAT1(7,1) = -999.
DAT1(44,1) = -999.
DAT1(79,1) = -999.
C
DO 113 L=200,320
DAT1(L,1) = -999.
113 CONTINUE
C
C (First call HSTOPL('DEF=ON') to activate all default options.)
C
CALL HSTOPL('DE=ON')
C
C Label the histogram bar endpoints
C
CALL HSTOPL('MI=OF')
C
C Convert the class label format to F7.1
C
CALL HSTOPC('FOR=ON','(F7.1)',9,7)
C
C To see the missing values in a histogram bar. Choose CLASS
C values so that the missing value indicator becomes a bar
C and use MVA = OFF (default.)
C
CALL HSTOPC('TIT=ON','Demo plot for special value in Histogram.
+ Title length has been increased to 96 characters.',0,0)
C
CALL HISTGR(DAT1, NDIM, NPTS, IFLAG, CLASS, NCLASS, WORK, NWRK)
C
IERROR = 0
WRITE (6,1001)
C
RETURN
C
1001 FORMAT (' HISTGR TEST SUCCESSFUL',24X,
1 'SEE PLOT TO VERIFY PERFORMANCE')
END
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