NAME

       GSCR (Set color representation) - associates a color value with a color index.

SYNOPSIS

       CALL GSCR (WKID, CI, CR, CG, CB)

C-BINDING SYNOPSIS

       #include <ncarg/gks.h>

       void gset_colr_rep(Gint ws_id, Gint colr_ind, const Gcolr_rep *colr_rep);

DESCRIPTION

       WKID        (Integer,  Input)  -  A  workstation  identifier.  WKID must be the same as that used in some
                   previous GOPWK call.

       CI          (Integer, Input) - A color index.

       CR          (Real, Input) - An intensity value for red between 0. and 1. inclusive.

       CG          (Real, Input) - An intensity value for green between 0. and 1. inclusive.

       CB          (Real, Input) - An intensity value for blue between 0. and 1. inclusive.

USAGE

       Color in GKS is "indexed", i.e. color attributes are assigned to primitives by using a color index.   The
       GKS function GSCR is used to associate a color value with color indices.

       It  is   recommended  that  all  color indices used in a given job be defined prior to calling any output
       primitive.  Since the result of a dynamic color change can be ambiguous, it is also recommended that GSCR
       not be called to change a color value after the original definitions.

       GSCR  may  be called after opening the workstation for which the color indices are to be defined, and not
       before that workstation is opened.  Different color tables can be maintained for different  workstations.
       For  example,  color index 2 for a CGM file may be associated with "red" while at the same time it may be
       associated with "green" for some X workstation.

       It is important to stress that color index 0 defines the background  color.  If  any  color  indices  are
       defined,  then  you  should  define  the background color index 0. Otherwise you run the risk of having a
       user-defined color match the default background color.

       For all GKS output primitives, color is assigned by an indexing scheme. The indices run from  0  to  255,
       where 0 is the background color index and 1 is the foreground color index.

ACCESS

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

SEE ALSO

       Online: gqcr, gsplci, gspmci, gsfaci, gstxci, gqplci, gqpmci, gqfaci, gqtxci, gset_colr_rep

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

COPYRIGHT

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