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loadimage.m
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1996-09-28
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# 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, 675 Mass Ave, Cambridge, MA 02139, USA.
function [X, map] = loadimage (filename)
# Load an image file.
#
# [X, map] = loadimage (img_file) loads an image and it's associated
# color map from file img_file. The image must be in stored in
# octave's image format.
#
# SEE ALSO: saveimage, load, save
# Written by Tony Richardson (amr@mpl.ucsd.edu) July 1994.
if (nargin != 1)
usage ("loadimage (filename)");
elseif (! isstr (filename))
error ("loadimage: expecting filename as a string");
endif
file = file_in_path (IMAGEPATH, filename);
if (isempty (file))
error ("loadimage: unable to find image file");
endif
# XXX FIXME XXX -- file is assumed to have variables X and map.
eval (['load ', file]);
endfunction