Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / nan-2.5.5 / medAbsDev.m

diff --git a/octave_packages/nan-2.5.5/medAbsDev.m b/octave_packages/nan-2.5.5/medAbsDev.m
new file mode 100644 (file)
index 0000000..71b599c
--- /dev/null
+++ b/octave_packages/nan-2.5.5/medAbsDev.m
@@ -0,0 +1,44 @@
+function [D, M] = medAbsDev(X, DIM)
+% medAbsDev calculates the median absolute deviation 
+%
+% Usage:  D = medAbsDev(X, DIM)  
+%    or:  [D, M] = medAbsDev(X, DIM)
+% Input:  X  : data
+%         DIM: dimension along which mad should be calculated (1=columns, 2=rows) 
+%               (optional, default=first dimension with more than 1 element
+% Output: D  : median absolute deviations
+%         M  : medians (optional)
+
+
+%      Copyright (C) 2003 Patrick Houweling\r%  Copyright (C) 2009 Alois Schloegl       \r
+%      $Id: medAbsDev.m 8075 2011-01-27 17:10:36Z schloegl $
+%       This function is part of the NaN-toolbox
+%       http://pub.ist.ac.at/~schloegl/matlab/NaN/
+
+%    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/>.
+
+
+% input checks
+if any(size(X)==0),
+       return; 
+end;
+\r
+if nargin<2,
+       M = median(X);
+else\r
+        M = median(X, DIM);
+end;
+
+% median absolute deviation: median of absolute deviations to median
+D = median(abs(X - repmat(M, size(X)./size(M))), DIM);
\ No newline at end of file