NAME

       CPRECT - Initializes the contouring of a rectangular array of data.

SYNOPSIS

       CALL CPRECT (ZDAT, KZDT, MZDT, NZDT, RWRK, LRWK, IWRK, LIWK)

C-BINDING SYNOPSIS

       #include <ncarg/ncargC.h>

       void c_cprect (float *zdat, int kzdt, int mzdt, int nzdt,
       float *rwrk, int lrwk, int *iwrk, int liwk)

DESCRIPTION

       ZDAT        (REAL array, dimensioned KZDT x n, where "n" is greater than or equal to NZDT,
                   input) is the array of data to be contoured.

       KZDT        (INTEGER, input) is the first dimension of the array ZDAT.

       MZDT        (INTEGER, input) is the first dimension of the array of data in ZDAT. MZDT
                   must be less than or equal to KZDT.

       NZDT        (INTEGER, input) is the second dimension of the array of data in ZDAT. NZDT
                   must be less than or equal to the declared second dimension of the array ZDAT.

       RWRK        (REAL array, dimensioned LRWK, input/output) is the real work array.

       LRWK        (INTEGER, input) is the length of RWRK.

       IWRK        (INTEGER array, dimensioned LIWK, input/output) is the integer work array.

       LIWK        (INTEGER, input) is the length of IWRK.

C-BINDING DESCRIPTION

       The C-binding argument descriptions are the same as the FORTRAN argument descriptions with
       the following exceptions:

       zdat(l,kzdt)
                   zdat is dimensioned l by kzdt, where l ≥ nzdt.

       kzdt        The second dimension of the array zdat.

       mzdt        The second dimension of the array of data in zdat. mzdt ≤ kzdt.

       nzdt        The first dimension of the array of data in zdat. nzdt ≤ l, where l is the
                   declared first dimension of the array zdat.

USAGE

       The routine CPRECT is called to initialize the process of drawing a contour plot from a
       rectangular array of data.  The arguments define the data array, a real workspace array,
       and an integer workspace array.  The dimensions of all the arrays are transferred to
       variables in COMMON, so that, in calls to other Conpack routines, those dimensions may be
       omitted.

       CPRECT initializes the internal pointers that manage workspace use; also, it decides the
       appropriate ranges of X and Y coordinates for drawing contour lines and positioning
       labels.

       If Conpack is to call SET, appropriate arguments are determined and SET is called;
       otherwise, GETSET is called to retrieve the arguments from the user's call to SET.

       The list of label positions (if any) left over from previous calls to the package is
       discarded.

       If contour levels are to be chosen by Conpack, 'NCL' is zeroed so that the levels will be
       chosen when they are needed.

       The minimum and maximum values in the data array are located and it is decided whether the
       data are essentially constant.

       Numeric-label parameters that depend on the range of values in the data array are
       initialized.

       A scale factor may be chosen.

EXAMPLES

       Use the ncargex command to see the following relevant examples: caredg, ccpback, ccpcff,
       ccpcfx, ccpcica, ccpci, ccpcis, ccpcit, ccpclc, ccpcld, ccpcldm, ccpcldr, ccpcll, ccpclu,
       ccpdflt, ccpfil, ccpga, ccphand, ccphcf, ccphl, ccphlt, ccpila, ccpils, ccpilt, ccpklb,
       ccplbam, ccplbdr, ccpllb, ccpllc, ccplll, ccpllo, ccpllp, ccpllt, ccpmap, ccpmovi,
       ccpmpxy, ccpncls, ccpnet, ccpnof, ccpnsd, ccppc, ccppc1, ccppc2, ccppc3, ccppc4, ccppkcl,
       ccppole, ccprc, ccprect, ccprwc, ccprwu, ccpscam, ccpset, ccpspv, ccpt2d, ccptitle, ccpvp,
       ccpvs, cidsfft, colcon, cpex01, cpex02, cpex03, cpex04, cpex05, cpex06, cpex07, cpex08,
       cbex01, vvex01, tconpa, fcover, ffex03, ffex05, fsfsgfa.

ACCESS

       To use CPRECT or c_cprect, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c,
       preferably in that order.

SEE ALSO

       Online: conpack, cpback, cpchcf, cpchcl, cpchhl, cpchil, cpchll, cpcica, cpclam, cpcldm,
       cpcldr, cpcltr, cpcnrc, cpdrpl, cpezct, cpgetc, cpgeti, cpgetr, cplbam, cplbdr, cpmpxy,
       cpmviw, cpmvrw, cppkcl, cppklb, cprset, cpscae, cpsetc, cpseti, cpsetr, cpsps1, cpsps2,
       ncarg_cbind

       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.