GCA - Draw a cell array

       To use GKS routines, load the NCAR GKS-0A library ncarg_gks.

       #include <ncarg/gks.h>

       void gcell_array(const Grect *rect, const Gpat_rep *colr_array);

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

UNIX                                               March 1993                                        GCA(3NCARG)

       XP1         (Real, Input) - X world coordinate of point 1.

       YP1         (Real, Input) - Y world coordinate of point 1.

       XP2         (Real, Input) - X world coordinate of point 2.

       YP2         (Real, Input) - Y world coordinate of point 2.

       NXCLR       (Integer, Input) - X dimension of the color index array CLRIA.

       NYCLR       (Integer, Input) - Y dimension of the color index array CLRIA.

       IXCLR       (Integer, Input) - The index of the starting column in index array CLRIA.

       IYCLR       (Integer, Input) - The index of the starting row in index array CLRIA.

       NXDO        (Integer, Input) - Number of cell elements to draw in the X dimension.

       NYDO        (Integer, Input) - Number of cell elements to draw in the Y dimension.

       CLRIA       (Integer array, Input) - An array of color indices dimensioned NXCLR x NYCLR which is used to
                   determine the color of each cell drawn.

       GCA - Draw a cell array

       Online: gscr, gcell_array

       Hardcopy: User's Guide for NCAR GKS-0A Graphics; NCAR Graphics Fundamentals, UNIX Version

       CALL GCA (XP1, YP1, XP2, YP2, NXCLR, NYCLR, IXCLR, IYCLR, NXDO, NYDO, CLRIA)

       Points  1 and 2 must be diagonally opposite corner points of a rectangle to be divided into NXDO cells in
       the X dimension and NYDO cells in the Y dimension.