X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Ftsa-4.2.4%2Fsbispec.m;fp=octave_packages%2Ftsa-4.2.4%2Fsbispec.m;h=2576e59723e315d582f97130455636b62e3b2702;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/tsa-4.2.4/sbispec.m b/octave_packages/tsa-4.2.4/sbispec.m
new file mode 100644
index 0000000..2576e59
--- /dev/null
+++ b/octave_packages/tsa-4.2.4/sbispec.m
@@ -0,0 +1,35 @@
+function sbispec(BISPEC)
+% SBISPEC show BISPECTRUM 
+
+%       $Id: sbispec.m 5090 2008-06-05 08:12:04Z schloegl $
+%	Copyright (C) 1997, 1998, 2008 by Alois Schloegl <a.schloegl@ieee.org>
+%
+%    This program 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.
+%
+%    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+[s1,s2]=size(BISPEC);
+t1=(0:s1-1)/max(s1);
+t2=(0:s2/2-1)/max(s2);
+tmp=tril(NaN*ones(s1,s2),-1);
+BISPEC=BISPEC+tmp+rot90(tmp);
+BISPEC=BISPEC(1:s1/2,:);
+
+subplot(211);
+mesh(t1,t2,abs(BISPEC));
+title('Bispectrum - mesh plot');
+
+subplot(212);
+contour(t1,t2,abs(BISPEC));
+%contour(t1,t2,log(abs(BISPEC)));
+title('Bispectrum - contour plot');