/usr/share/octave/packages/3.2/nan-2.4.4/nanmean.m is in octave-nan 2.4.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | function [o] = nanmean(i,DIM)
% NANMEAN same as SUM but ignores NaN's.
% NANMEAN is OBSOLETE; use MEAN instead. NANMEAN is included
% to provide backward compatibility
%
% Y = nanmean(x [,DIM])
%
% DIM dimension
% 1 sum of columns
% 2 sum of rows
% default or []: first DIMENSION with more than 1 element
% Y resulting mean
%
%
% see also: MEAN, SUMSKIPNAN, NANSUM
% $Id: nanmean.m 8223 2011-04-20 09:16:06Z schloegl $
% Copyright (C) 2009 by Alois Schloegl <alois.schloegl@gmail.com>
% This is part of the NaN-toolbox. For more details see
% 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/>.
if nargin>1
[o,n] = sumskipnan(i,DIM);
else
[o,n] = sumskipnan(i);
end;
o=o./n;
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