1% Testing divand in 2 dimensions.
2
3%try
4% grid of background field
5[xi,yi] = ndgrid(linspace(0,1,30));
6fi_ref = sin( xi*6 ) .* cos( yi*6);
7
8% grid of observations
9[x,y] = ndgrid(linspace(eps,1-eps,20));
10x = x(:);
11y = y(:);
12
13f = sin( x*6 ) .* cos( y*6);
14
15mask = ones(size(xi));
16pm = ones(size(xi)) / (xi(2,1)-xi(1,1));
17pn = ones(size(xi)) / (yi(1,2)-yi(1,1));
18
19%fi = divand(mask,{pm,pn},{xi,yi},{x,y},f,.1,20);
20fi = divand(mask,{pm,pn},{xi,yi},{x,y},f,.1,20,'factorize',0);
21rms = divand_rms(fi_ref,fi);
22
23if (rms > 0.005)
24  error('unexpected large difference with reference field');
25end
26
27%fprintf('OK (rms=%g)\n',rms);
28
29
30fi_dual = divand(mask,{pm,pn},{xi,yi},{x,y},f,.1,20,'primal',0);
31rms = divand_rms(fi_dual,fi);
32
33%fprintf(1,'Testing dual 2D-optimal variational inverse: ');
34
35if (rms > 1e-6)
36  error('unexpected large difference with reference field');
37end
38
39fprintf('(max difference=%g) ',rms);
40
41
42
43% Copyright (C) 2014 Alexander Barth <a.barth@ulg.ac.be>
44%
45% This program is free software; you can redistribute it and/or modify it under
46% the terms of the GNU General Public License as published by the Free Software
47% Foundation; either version 2 of the License, or (at your option) any later
48% version.
49%
50% This program is distributed in the hope that it will be useful, but WITHOUT
51% ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
52% FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
53% details.
54%
55% You should have received a copy of the GNU General Public License along with
56% this program; if not, see <http://www.gnu.org/licenses/>.
57