Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / tsa-4.2.4 / bisdemo.m

diff --git a/octave_packages/tsa-4.2.4/bisdemo.m b/octave_packages/tsa-4.2.4/bisdemo.m
new file mode 100644 (file)
index 0000000..d8613e1
--- /dev/null
+++ b/octave_packages/tsa-4.2.4/bisdemo.m
@@ -0,0 +1,34 @@
+% BISDEMO (script) Shows BISPECTRUM of eeg8s.mat
+
+%       $Id: bisdemo.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/>.
+
+load eeg8s.mat;
+[BISPEC,BICOV,ACF]=bispec(eeg8s,30);
+[s1,s2]=size(BISPEC);
+t1=(1:s1)/max(s1);
+t2=(1:s2)/max(s2);
+subplot(211);
+mesh(t1,t2,abs(BISPEC));
+title('Bispectrum - mesh plot');
+
+subplot(212);
+if exist('OCTAVE_VERSION')>5
+        contour(abs(BISPEC),10,t1,t2);
+else
+        contour(t1,t2,abs(BISPEC),10);
+end;        
+title('Bispectrum - contour plot');