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comparison scripts/statistics/base/statistics.m @ 3426:f8dde1807dee

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[project @ 2000-01-13 08:40:00 by jwe]
author jwe
date Thu, 13 Jan 2000 08:40:53 +0000
parents eb27ea9b7ff8
children 71d2e09c15a2
comparison
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3425:8625164a0a39 3426:f8dde1807dee
1 ## Copyright (C) 1995, 1996, 1997 Kurt Hornik 1 ## Copyright (C) 1995, 1996, 1997 Kurt Hornik
2 ## 2 ##
3 ## This program is free software; you can redistribute it and/or modify 3 ## This program is free software; you can redistribute it and/or modify
4 ## it under the terms of the GNU General Public License as published by 4 ## it under the terms of the GNU General Public License as published by
5 ## the Free Software Foundation; either version 2, or (at your option) 5 ## the Free Software Foundation; either version 2, or (at your option)
6 ## any later version. 6 ## any later version.
7 ## 7 ##
8 ## This program is distributed in the hope that it will be useful, but 8 ## This program is distributed in the hope that it will be useful, but
9 ## WITHOUT ANY WARRANTY; without even the implied warranty of 9 ## WITHOUT ANY WARRANTY; without even the implied warranty of
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 ## General Public License for more details. 11 ## General Public License for more details.
12 ## 12 ##
13 ## You should have received a copy of the GNU General Public License 13 ## You should have received a copy of the GNU General Public License
14 ## along with this file. If not, write to the Free Software Foundation, 14 ## along with this file. If not, write to the Free Software Foundation,
15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 15 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16 16
17 ## usage: S = statistics (X) 17 ## usage: S = statistics (X)
19 ## If X is a matrix, return a matrix S with the min, first quartile, 19 ## If X is a matrix, return a matrix S with the min, first quartile,
20 ## median, third quartile, max, mean, std, skewness and kurtosis of the 20 ## median, third quartile, max, mean, std, skewness and kurtosis of the
21 ## columns of X as its rows. 21 ## columns of X as its rows.
22 ## 22 ##
23 ## If X is a vector, treat it as a column vector. 23 ## If X is a vector, treat it as a column vector.
24 24
25 ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at> 25 ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at>
26 ## Description: Compute basic statistics 26 ## Description: Compute basic statistics
27 27
28 function S = statistics (X) 28 function S = statistics (X)
29 29
30 if (nargin != 1) 30 if (nargin != 1)
31 usage ("S = statistics (X)"); 31 usage ("S = statistics (X)");
32 endif 32 endif
33 33
34 if (prod (size (X)) > 1) 34 if (prod (size (X)) > 1)
35 if (is_vector (X)) 35 if (is_vector (X))
36 X = reshape (X, length (X), 1); 36 X = reshape (X, length (X), 1);
37 endif 37 endif
38 for k=1:columns(X) 38 for k=1:columns(X)
39 S(:,k) = [(min (X(:,k))); 39 S(:,k) = [(min (X(:,k)));
40 (empirical_inv ([0.25;0.5;0.75], X(:,k))); 40 (empirical_inv ([0.25;0.5;0.75], X(:,k)));
41 (max (X(:,k))); 41 (max (X(:,k)));
42 (mean (X(:,k))); 42 (mean (X(:,k)));
43 (std (X(:,k))); 43 (std (X(:,k)));
44 (skewness (X(:,k))); 44 (skewness (X(:,k)));
45 (kurtosis (X(:,k)))]; 45 (kurtosis (X(:,k)))];
46 endfor 46 endfor
47 else 47 else
48 error ("statistics: invalid argument"); 48 error ("statistics: invalid argument");
49 endif 49 endif
50 50
51 endfunction 51 endfunction