676ea3192f
Former-commit-id:b13cbb7e00[formerly 4909e0dd166e43c22a34d96aa744f51db8a7d6c0] Former-commit-id:3904c4ccf5
125 lines
3.4 KiB
Fortran
125 lines
3.4 KiB
Fortran
SUBROUTINE GCBOXX ( kx, ky, grid, ioffx, ioffy, iskip, nlvl,
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+ clvl, icolr, lintyp, linwid, linlbl, iret )
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C************************************************************************
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C* GCBOXX *
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C* *
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C* This subroutine draws contours through a grid of data. The *
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C* contour fill algorithm is used and the subgrid boxes are outlined *
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C* with the specified lines instead of filled polygons. *
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C* *
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C* GCBOXX ( KX, KY, GRID, IOFFX, IOFFY, ISKIP, NLVL, CLVL, ICOLR, *
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C* LINTYP, LINWID, LINLBL, IRET ) *
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C* *
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C* Input parameters: *
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C* *
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C* KX INTEGER Number of x grid points *
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C* KY INTEGER Number of y grid points *
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C* GRID (KX,KY) REAL Grid data array *
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C* IOFFX INTEGER X offset to first point *
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C* IOFFY INTEGER Y offset to first point *
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C* ISKIP INTEGER Skip factor in original grid *
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C* NLVL INTEGER Number of contour levels *
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C* CLVL (NLVL) REAL Contour level values *
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C* ICOLR (NLVL+1) INTEGER Contour color numbers *
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C* LINTYP (NLVL+1) INTEGER Contour line types *
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C* LINWID (NLVL+1) INTEGER Contour line widths *
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C* LINLBL (NLVL+1) INTEGER Contour label types *
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C* *
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C* Output parameters: *
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C* *
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C* IRET INTEGER Return code *
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C** *
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C* Log: *
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C* M. desJardins/NMC 11/91 From GCONTR *
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C* S. Jacobs/NCEP 1/96 Added CADJST to adjust grid values *
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C* T. Lee/GSC 9/97 Fixed typo, NOMOMO -> NOMONO *
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C* S. Jacobs/NCEP 2/00 Eliminate subboxing when CONTUR=1 *
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C************************************************************************
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INCLUDE 'GEMPRM.PRM'
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INCLUDE 'ERROR.PRM'
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INCLUDE 'CONTUR.CMN'
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C*
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REAL grid (*), clvl (*)
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INTEGER icolr (*), linlbl (*), lintyp (*), linwid (*)
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C*
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LOGICAL linflg, bad
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REAL clev (LLCLEV)
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C------------------------------------------------------------------------
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iret = NORMAL
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C
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C* Move the contour levels into a local array in order to add a
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C* maximum level.
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C
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IF ( nlvl .lt. LLCLEV ) THEN
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nlev = nlvl
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ELSE
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nlev = LLCLEV - 1
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END IF
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bad = .false.
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DO i = 1, nlev
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clev (i) = clvl (i)
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IF ( i .gt. 1 ) THEN
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IF ( clev (i) .le. clev (i-1) ) bad = .true.
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END IF
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END DO
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C
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C* If levels are not in the correct order, set error and return.
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C
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IF ( bad ) THEN
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iret = NOMONO
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RETURN
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END IF
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C
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C* Build dummy maximum level.
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C
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CALL GR_STAT ( grid, kx, ky, 1, 1, kx, ky, gmin, gmax, gavg,
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+ gdev, ier )
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high = 2 * ABS ( gmax ) + ABS ( gmin )
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IF ( high .le. clev (nlev) ) high = clev (nlev) + 1
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nlev = nlev + 1
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clev (nlev) = high
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C
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C* Read in the box subset factor. Check that it is valid and set
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C* it in common for the rest of the original contouring code.
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C
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IF ( jbxsub .lt. 2 ) THEN
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numsub = 2
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ELSE IF ( jbxsub .gt. 48 ) THEN
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numsub = 50
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ELSE
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numsub = jbxsub + 2
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END IF
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C
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C* Move offsets and skip factor into common.
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C
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offx = FLOAT ( ioffx )
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offy = FLOAT ( ioffy )
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skip = FLOAT ( iskip )
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C
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C* This program expects the data in the Z array in common.
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C
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DO i = 1, kx * ky
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z (i) = grid (i)
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END DO
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C
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C* Adjust the grid values.
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C
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CALL CADJST ( kx, ky, nlev, clev, z, ier )
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C
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C* Save grid size as ISIZE, JSIZE.
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C
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isize = kx
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jsize = ky
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C
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C* Compute distance along each subbox.
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C
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fincxy = 1. / FLOAT ( numsub - 1 )
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C
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C* Call the driver for the fill contouring.
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C
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linflg = .true.
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CALL FFDRIV ( nlev, clev, icolr, lintyp, linwid, linlbl,
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+ linflg, ier )
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C*
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RETURN
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END
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