Mercurial > hg > octave-max
annotate scripts/statistics/base/table.m @ 11213:009d16b010fa
lo-mappers.cc (xmod, xrem): don't copy sign if result is zero
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 09 Nov 2010 13:21:15 -0500 |
| parents | be55736a0783 |
| children | e151e23f73bc |
| rev | line source |
|---|---|
| 7017 | 1 ## Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2005, 2006, 2007 |
| 2 ## Kurt Hornik | |
| 3426 | 3 ## |
| 3922 | 4 ## This file is part of Octave. |
| 5 ## | |
| 6 ## Octave is free software; you can redistribute it and/or modify it | |
| 7 ## under the terms of the GNU General Public License as published by | |
| 7016 | 8 ## the Free Software Foundation; either version 3 of the License, or (at |
| 9 ## your option) any later version. | |
| 3426 | 10 ## |
| 3922 | 11 ## Octave is distributed in the hope that it will be useful, but |
| 3200 | 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3426 | 14 ## General Public License for more details. |
| 15 ## | |
| 3200 | 16 ## You should have received a copy of the GNU General Public License |
| 7016 | 17 ## along with Octave; see the file COPYING. If not, see |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 3200 | 19 |
| 3453 | 20 ## -*- texinfo -*- |
|
10793
be55736a0783
Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents:
7017
diff
changeset
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21 ## @deftypefn {Function File} {[@var{t}, @var{l_x}] =} table (@var{x}) |
| 3460 | 22 ## @deftypefnx {Function File} {[@var{t}, @var{l_x}, @var{l_y}] =} table (@var{x}, @var{y}) |
| 3453 | 23 ## Create a contingency table @var{t} from data vectors. The @var{l} |
| 24 ## vectors are the corresponding levels. | |
| 3200 | 25 ## |
| 26 ## Currently, only 1- and 2-dimensional tables are supported. | |
| 3453 | 27 ## @end deftypefn |
| 3426 | 28 |
| 5428 | 29 ## Author: KH <Kurt.Hornik@wu-wien.ac.at> |
| 3456 | 30 ## Description: Cross tabulation |
| 3426 | 31 |
| 3200 | 32 function [t, v, w] = table (x, y) |
| 3426 | 33 |
| 3200 | 34 if (nargin == 1) |
| 4030 | 35 if (! (isvector (x))) |
| 3456 | 36 error ("table: x must be a vector"); |
| 3200 | 37 endif |
| 38 v = values (x); | |
| 39 for i = 1 : length (v) | |
| 40 t(i) = sum (x == v(i) | isnan (v(i)) * isnan (x)); | |
| 41 endfor | |
| 42 elseif (nargin == 2) | |
| 4030 | 43 if (! (isvector (x) && isvector (y) && (length (x) == length (y)))) |
| 3456 | 44 error ("table: x and y must be vectors of the same length"); |
| 3200 | 45 endif |
| 46 v = values (x); | |
| 47 w = values (y); | |
| 48 for i = 1 : length (v) | |
| 49 for j = 1 : length (w) | |
| 3426 | 50 t(i,j) = sum ((x == v(i) | isnan (v(i)) * isnan (x)) & |
| 51 (y == w(j) | isnan (w(j)) * isnan (y))); | |
| 3200 | 52 endfor |
| 53 endfor | |
| 54 else | |
| 6046 | 55 print_usage (); |
| 3200 | 56 endif |
| 3426 | 57 |
| 3200 | 58 endfunction |