Mercurial > jwe > octave
view scripts/statistics/mean.m @ 1014:3f257ab07921
[project @ 1995-01-04 19:06:56 by jwe]
author | jwe |
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date | Wed, 04 Jan 1995 19:06:56 +0000 |
parents | 3470f1e25a79 |
children | 611d403c7f3d |
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# Copyright (C) 1993, 1994, 1995 John W. Eaton # # This file is part of Octave. # # Octave 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, or (at your option) any # later version. # # Octave 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 Octave; see the file COPYING. If not, write to the Free # Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. function retval = mean (a) # usage: mean (a) # # For vector arguments, return the mean the values. # # For matrix arguments, return a row vector containing the mean for # each column. # # See also: median, std if (nargin != 1) usage ("mean (a)"); endif [nr, nc] = size (a); if (nr == 1 || nc == 1) retval = sum (a) / length (a); elseif (nr > 0 && nc > 0) retval = sum (a) / nr; else error ("mean: invalid matrix argument"); endif endfunction