# Copyright (C) 1995 John W. Eaton
# 
# This file is part of Octave.
# 
# Octave is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
# 
# Octave is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License
# along with Octave; see the file COPYING.  If not, write to the Free
# Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

function imshow (a1, a2, a3)

# Display images.
#
# imshow (X) displays an indexed image using the current colormap.
#
# imshow (X, map) displays an indexed image using the specified colormap.
#
# imshow (I, n) displays a gray scale intensity image.
#
# imshow (R, G, B) displays an RGB image.
#
# SEE ALSO: image, imagesc, colormap, gray2ind, rgb2ind.

# Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.

  if (nargin < 0 || nargin > 3)
    usage ("imshow (args)");
  elseif (nargin == 2)
    if (length (a2) == 1)
      [a1, a2] = gray2ind (a1, a2);
    endif
    colormap (a2);
  elseif (nargin == 3)
    [a1, a2] = rgb2ind (a1, a2, a3);
    colormap (a2);
  endif

  image (a1);

endfunction