Mercurial > octave-nkf

annotate scripts/statistics/distributions/empirical_rnd.m @ 7017:a1dbe9d80eee

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[project @ 2007-10-12 21:27:11 by jwe]
author jwe
date Fri, 12 Oct 2007 21:27:37 +0000
parents 93c65f2a5668
children 1bf0ce0930be
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7017
a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe]
jwe
parents: 7016
diff changeset
1 ## Copyright (C) 1996, 1997, 1998, 2000, 2002, 2004, 2005, 2006, 2007
a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe]
jwe
parents: 7016
diff changeset
2 ## Kurt Hornik
3426
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
3 ##
3922
38c61cbf086c [project @ 2002-05-01 06:48:35 by jwe]
jwe
parents: 3456
diff changeset
4 ## This file is part of Octave.
38c61cbf086c [project @ 2002-05-01 06:48:35 by jwe]
jwe
parents: 3456
diff changeset
5 ##
38c61cbf086c [project @ 2002-05-01 06:48:35 by jwe]
jwe
parents: 3456
diff changeset
6 ## Octave is free software; you can redistribute it and/or modify it
38c61cbf086c [project @ 2002-05-01 06:48:35 by jwe]
jwe
parents: 3456
diff changeset
7 ## under the terms of the GNU General Public License as published by
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6046
diff changeset
8 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6046
diff changeset
9 ## your option) any later version.
3426
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
10 ##
3922
38c61cbf086c [project @ 2002-05-01 06:48:35 by jwe]
jwe
parents: 3456
diff changeset
11 ## Octave is distributed in the hope that it will be useful, but
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3426
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
14 ## General Public License for more details.
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
15 ##
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
16 ## You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6046
diff changeset
17 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6046
diff changeset
18 ## <http://www.gnu.org/licenses/>.
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
19
3456
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
20 ## -*- texinfo -*-
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
21 ## @deftypefn {Function File} {} empirical_rnd (@var{n}, @var{data})
4859
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
22 ## @deftypefnx {Function File} {} empirical_rnd (@var{data}, @var{r}, @var{c})
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
23 ## @deftypefnx {Function File} {} empirical_rnd (@var{data}, @var{sz})
3456
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
24 ## Generate a bootstrap sample of size @var{n} from the empirical
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
25 ## distribution obtained from the univariate sample @var{data}.
4859
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
26 ##
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
27 ## If @var{r} and @var{c} are given create a matrix with @var{r} rows and
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
28 ## @var{c} columns. Or if @var{sz} is a vector, create a matrix of size
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
29 ## @var{sz}.
3456
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
30 ## @end deftypefn
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
31
5428
2a16423e4aa0 [project @ 2005-08-23 18:38:27 by jwe]
jwe
parents: 5307
diff changeset
32 ## Author: KH <Kurt.Hornik@wu-wien.ac.at>
3456
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
33 ## Description: Bootstrap samples from the empirical distribution
3426
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
34
4859
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
35 function rnd = empirical_rnd (data, r, c)
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
36
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
37 if (nargin == 2)
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
38 if (isscalar(data))
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
39 c = data;
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
40 data = r;
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
41 r = 1;
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
42 endif
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
43 elseif (nargin != 3)
6046
34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe]
jwe
parents: 5428
diff changeset
44 print_usage ();
4859
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
45 endif
3426
f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe]
jwe
parents: 3191
diff changeset
46
4030
22bd65326ec1 [project @ 2002-08-09 18:58:13 by jwe]
jwe
parents: 3922
diff changeset
47 if (! isvector (data))
3456
434790acb067 [project @ 2000-01-19 06:58:51 by jwe]
jwe
parents: 3426
diff changeset
48 error ("empirical_rnd: data must be a vector");
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
49 endif
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
50
4859
265d566cc770 [project @ 2004-04-08 23:52:45 by jwe]
jwe
parents: 4030
diff changeset
51 rnd = discrete_rnd (data, ones (size (data)) / length (data), r, c);
3191
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
52
e4f4b2d26ee9 [project @ 1998-10-23 05:43:59 by jwe]
jwe
parents:
diff changeset
53 endfunction