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## Copyright (C) 2010-2013 Kai Habel
##
## 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 3 of the License, 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, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} saveas (@var{h}, @var{filename})
## @deftypefnx {Function File} {} saveas (@var{h}, @var{filename}, @var{fmt})
## Save graphic object @var{h} to the file @var{filename} in graphic
## format @var{fmt}.
##
## @var{fmt} should be one of the following formats:
##
## @table @code
## @item ps
## PostScript
##
## @item eps
## Encapsulated PostScript
##
## @item jpg
## JPEG Image
##
## @item png
## PNG Image
##
## @item emf
## Enhanced Meta File
##
## @item pdf
## Portable Document Format
## @end table
##
## All device formats specified in @code{print} may also be used. If
## @var{fmt} is omitted it is extracted from the extension of @var{filename}.
## The default format is @qcode{"pdf"}.
##
## @example
## @group
## clf ();
## surf (peaks);
## saveas (1, "figure1.png");
## @end group
## @end example
##
## @seealso{print, orient}
## @end deftypefn
## Author: Kai Habel
function saveas (h, filename, fmt = "pdf")
if ((nargin != 2) && (nargin != 3))
print_usage ();
endif
if (ishandle (h))
if (isfigure (h))
fig = h;
else
fig = ancestor (h, "figure");
endif
else
error ("saveas: first argument H must be a graphics handle");
endif
if (!ischar (filename))
error ("saveas: FILENAME must be a string");
endif
if (nargin == 2)
[~, ~, ext] = fileparts (filename);
if (!isempty (ext))
fmt = ext(2:end);
endif
endif
if (nargin == 3)
if (!ischar (filename))
error ("saveas: EXT must be a string");
endif
[~, ~, ext] = fileparts (filename);
if (isempty (ext))
filename = strcat (filename, ".", fmt);
endif
endif
prt_opt = strcat ("-d", tolower (fmt));
print (fig, filename, prt_opt);
endfunction
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