Mercurial > octave-nkf
view scripts/statistics/base/table.m @ 3453:71d2e09c15a2
[project @ 2000-01-18 08:32:09 by jwe]
author | jwe |
---|---|
date | Tue, 18 Jan 2000 08:32:15 +0000 |
parents | f8dde1807dee |
children | 434790acb067 |
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## Copyright (C) 1995, 1996, 1997 Kurt Hornik ## ## 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, 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 file. If not, write to the Free Software Foundation, ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ## -*- texinfo -*- ## @deftypefn {Function File} {} [@var{t}, @var{l_x}] = table (@var{x}) ## @deftypefnx {Function File} {} [@var{t}, @var{l_x}, @var{l_y}] = table (@var{x}, @var{y}) ## Create a contingency table @var{t} from data vectors. The @var{l} ## vectors are the corresponding levels. ## ## Currently, only 1- and 2-dimensional tables are supported. ## @end deftypefn ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at> ## Description: Cross tabulation function [t, v, w] = table (x, y) if (nargin == 1) if !(is_vector (x)) error ("table: x must be a vector"); endif v = values (x); for i = 1 : length (v) t(i) = sum (x == v(i) | isnan (v(i)) * isnan (x)); endfor elseif (nargin == 2) if !(is_vector (x) && is_vector (y) && (length (x) == length (y))) error ("table: x and y must be vectors of the same length"); endif v = values (x); w = values (y); for i = 1 : length (v) for j = 1 : length (w) t(i,j) = sum ((x == v(i) | isnan (v(i)) * isnan (x)) & (y == w(j) | isnan (w(j)) * isnan (y))); endfor endfor else usage ("[t, l_x, ...] = table (x, ...)"); endif endfunction