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comparison extra/fpl/deprecated/FPL2pdequiver.m @ 12671:20e8aca47b2c octave-forge

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prepare for release
author cdf
date Mon, 17 Aug 2015 10:19:39 +0000
parents extra/fpl/inst/deprecated/FPL2pdequiver.m@2748190086ad
children
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12670:d68da2f2417b 12671:20e8aca47b2c
1 ## Copyright (C) 2004-2008 Carlo de Falco, Massimiliano Culpo
2 ##
3 ## This file is part of
4 ##
5 ## FPL - Fem PLotting package for octave
6 ##
7 ## FPL is free software; you can redistribute it and/or modify
8 ## it under the terms of the GNU General Public License as published by
9 ## the Free Software Foundation; either version 3 of the License, or
10 ## (at your option) any later version.
11 ##
12 ## FPL is distributed in the hope that it will be useful,
13 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ## GNU General Public License for more details.
16 ##
17 ## You should have received a copy of the GNU General Public License
18 ## along with FPL; If not, see <http://www.gnu.org/licenses/>.
19 ##
20 ##
21 ## AUTHORS:
22 ## Carlo de Falco <cdf _AT_ users.sourceforge.net>
23 ##
24 ## Culpo Massimiliano
25 ## Bergische Universitaet Wuppertal
26 ## Fachbereich C - Mathematik und Naturwissenschaften
27 ## Arbeitsgruppe fuer Angewandte MathematD-42119 Wuppertal Gaussstr. 20
28 ## D-42119 Wuppertal, Germany
29
30 ## -*- texinfo -*-
31 ## @deftypefn {Function File} {} FPL2pdequiver (@var{mesh}, @
32 ## @var{vx}, @var{vy}, [ @var{property}, @var{value} ...])
33 ##
34 ## Plots the 2D vector field @var{vx}, @var{vy}
35 ## defined on the triangulation @var{mesh} using opendx.
36 ##
37 ## Options (default values):
38 ## @var{sample_density} (100)
39 ##
40 ## @seealso{FPL2pdesurf, FPL2ptcsurf, FPL2ptcquiver}
41 ## @end deftypefn
42
43 function FPL2pdequiver(mesh,vecfieldx,vecfieldy,varargin);
44
45 sample_density = "100";
46
47 if( (nargin >= 3) && (rem(nargin,2)==1) )
48 for ii=1:2:length(varargin)
49 [ varargin{ii} " = " varargin{ii+1} ";" ]
50 eval([ varargin{ii} " = """ varargin{ii+1} """;" ]);
51 endfor
52 else
53 error(["wrong number of parameters " num2str (nargin)])
54 endif
55
56 JX = sum(vecfieldx,1)'/3;
57 JY = sum(vecfieldy,1)'/3;
58
59 dataname = mktemp("/tmp",".dx");
60 scriptname = mktemp("/tmp",".net");
61
62 FPL2dxoutputdata(dataname,mesh.p,mesh.t,[ JX JY],'J',1,2,1);
63
64 showmesh = file_in_path(path,"FPL2pdequiver.net");
65
66 system (["cp " showmesh " " scriptname]);
67 system (["sed -i \'s|__FILE__DX__|" dataname "|g\' " scriptname]);
68 system (["sed -i \'s|__SAMPLE__DENSITY__|" sample_density "|g\' " scriptname]);
69
70 command = ["dx -noConfirmedQuit -program " scriptname " -execute -image >& /dev/null & "];
71
72 system(command);
73
74
75 endfunction
76
77 function filename = mktemp (direct,ext);
78
79 if (~exist(direct,"dir"))
80 error("trying to save temporary file to non existing directory")
81 endif
82
83 done=false;
84
85 while ~done
86 filename = [direct,"/FPL.",num2str(floor(rand*1e7)),ext];
87 if ~exist(filename,"file")
88 done =true;
89 endif
90 endwhile
91
92 endfunction