## Copyright (C) 2001 Paul Kienzle ## ## 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 2 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/>. ## v = nanmean(X [, dim]); ## nanmean is identical to the mean function except that NaN values are ## ignored. If all values are NaN, the mean is returned as NaN. ## [Is this behaviour compatible?] ## ## See also: nanmin, nanmax, nansum, nanmedian function v = nanmean (X, varargin) if nargin < 1 usage ("v = nanmean(X [, dim])"); else n = sum (!isnan(X), varargin{:}); n(n == 0) = NaN; X(isnan(X)) = 0; v = sum (X, varargin{:}) ./ n; endif endfunction

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