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rasgetpal(1NCARG)


NAME

   rasgetpal  -  extract the color palette of a rasterfile and write it to
   standard output

SYNOPSIS

   rasgetpal [-Version] srcfile [dstfile]

DESCRIPTION

   Given srcfile and no dstfile, rasgetpal will extract the color  palette
   from  srcfile  and  print  it in textual form to standard output. Given
   srcfile and dstfile, rasgetpal will  extract  the  color  palette  from
   srcfile  and  save  it  in file dstfile. If the extension of dstfile is
   ".txt", the color palette is saved in textual form. If  it  is  ".pal",
   the palette is saved in a binary HDF-compatible format.

   Once  you have a ".pal" color palette you can use it with NCSA's XImage
   or any other application that uses this  format  of  color  palette.  A
   textual  color  palette  can be edited using a standard text editor and
   then fed back to ctrans, rasview, or rascat in order to get a  modified
   color  palette. It's also useful when you simply want to know what's in
   your color palette. See "man ras_palette" for more information on these
   different formats.

OPTIONS

   -help  Print help information.

   -Version
          Print the version number.

EXAMPLE

   Let's  suppose  you  have an X Window Dump rasterfile called window.xwd
   and you'd like to get a textual copy of the color palette.

      % rasgetpal window.xwd window.txt
      % vi window.txt /* edit the color table */
      % rasview -pal window.txt window.xwd

   You could also use the command below to get the same palette file:

      % rasgetpal window.xwd >window.txt

   Now suppose you'd like to get an  HDF-compatible  binary  palette  from
   "window.xwd":

      % rasgetpal window.xwd new.pal

CAVEATS

   A  color  map  can  be  extracted from indexed rasterfiles but not from
   direct-color rasterfiles.

SEE ALSO

   rasview(1NCARG),   rascat(1NCARG),   rasls(1NCARG),   rassplit(1NCARG),
   ras_formats(5NCARG), ras_palette(5NCARG)

   Hardcopy: 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.



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