/usr/share/octave/packages/fpl-1.3.4/deprecated/FPL2pdeshowmesh.m is in octave-fpl 1.3.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | ## 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 3 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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