X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fstatistics-1.1.3%2Fnanmean.m;fp=octave_packages%2Fstatistics-1.1.3%2Fnanmean.m;h=9b3c22453bf173c0ebc5b7289c3f14f7d5b3d665;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/statistics-1.1.3/nanmean.m b/octave_packages/statistics-1.1.3/nanmean.m
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+## Copyright (C) 2001 Paul Kienzle <pkienzle@users.sf.net>
+##
+## 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/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{v} =} nanmean (@var{X})
+## @deftypefnx{Function File} {@var{v} =} nanmean (@var{X}, @var{dim})
+## Compute the mean value while ignoring NaN values.
+##
+## @code{nanmean} is identical to the @code{mean} function except that NaN values
+## are ignored.  If all values are NaN, the mean is returned as NaN. 
+##
+## @seealso{mean, nanmin, nanmax, nansum, nanmedian}
+## @end deftypefn
+
+function v = nanmean (X, varargin) 
+  if nargin < 1
+    print_usage;
+  else
+    n = sum (!isnan(X), varargin{:});
+    n(n == 0) = NaN;
+    X(isnan(X)) = 0;
+    v = sum (X, varargin{:}) ./ n;
+  endif
+endfunction