--- /dev/null
+## Copyright (C) 2004-2008,2009 Carlo de Falco, Massimiliano Culpo
+##
+## This file is part of
+##
+## FPL - Fem PLotting package for octave
+##
+## FPL 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 of the License, or
+## (at your option) any later version.
+##
+## FPL 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 FPL; If not, see <http://www.gnu.org/licenses/>.
+##
+##
+## AUTHORS:
+## Carlo de Falco <cdf _AT_ users.sourceforge.net>
+##
+## Culpo Massimiliano
+## Bergische Universitaet Wuppertal
+## Fachbereich C - Mathematik und Naturwissenschaften
+## Arbeitsgruppe fuer Angewandte MathematD-42119 Wuppertal Gaussstr. 20
+## D-42119 Wuppertal, Germany
+
+## -*- texinfo -*-
+##
+## @deftypefn {Function File} {} FPL2pdeshowmesh (@var{mesh},@var{color})
+##
+## Displays one 2-D triangulations using opendx
+##
+## Examples:
+## @example
+##
+## FPL2pdeshowmesh(mesh)
+## FPL2pdeshowmesh(mesh,"blue")
+##
+## @end example
+##
+## @seealso{FPL2ptcshowmesh}
+## @end deftypefn
+
+function FPL2pdeshowmesh (varargin)
+
+ if nargin == 1
+ colorname = "red";
+ else
+ colorname = varargin{2};
+ endif
+
+ dataname = mktemp("/tmp",".dx");
+ FPL2dxoutputdata(dataname,varargin{1}.p,varargin{1}.t,varargin{1}.p(1,:)','x',0,1,1);
+
+ scriptname = mktemp("/tmp",".net");
+
+ showmesh = file_in_path(path,"FPL2pdeshowmesh.net");
+
+ system (["cp " showmesh " " scriptname]);
+ system (["sed -i \'s|FILENAME|" dataname "|g\' " scriptname]);
+ system (["sed -i \'s|COLORNAME|" colorname "|g\' " scriptname]);
+
+ command = ["dx -noConfirmedQuit -program " scriptname " -execute -image >& /dev/null & "];
+ system(command);
+
+endfunction
+
+function filename = mktemp (direct,ext);
+
+ if (~exist(direct,"dir"))
+ error("trying to save temporary file to non existing directory")
+ end
+
+ done=false;
+
+ while ~done
+ filename = [direct,"/FPL.",num2str(floor(rand*1e7)),ext];
+ if ~exist(filename,"file")
+ done =true;
+ endif
+ endwhile
+
+endfunction
+
+%!demo
+%! msh.p = [0 0; 1 0; 1 1; 0 1].';
+%! msh.t = [1 2 3 1; 1 3 4 1].';
+%! msh.e = [1 2 0 0 1 0 1; 2 3 0 0 2 0 1; 3 4 0 0 3 0 1; 4 1 0 0 4 0 1].';
+%! FPL2pdeshowmesh (msh, "red");
+%! s = input ("do you see a red outlined square divided in two triangles (if you see an empty plot try ctrl-F)? (y/n): " ,"s");
+%! assert(s, "y")
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