home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Geek Gadgets 1
/
ADE-1.bin
/
ade-dist
/
octave-1.1.1p1-src.tgz
/
tar.out
/
fsf
/
octave
/
scripts
/
statistics
/
mean.m
< prev
next >
Wrap
Text File
|
1996-09-28
|
1KB
|
44 lines
# 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