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

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[project @ 2007-10-12 21:27:11 by jwe]
author jwe
date Fri, 12 Oct 2007 21:27:37 +0000
parents 93c65f2a5668
children fd0a3ac60b0e
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1 ## Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2005, 2006, 2007
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2 ## Kurt Hornik
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} logistic_pdf (@var{x})
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22 ## For each component of @var{x}, compute the PDF at @var{x} of the
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23 ## logistic distribution.
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24 ## @end deftypefn
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25
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26 ## Author: KH <Kurt.Hornik@wu-wien.ac.at>
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27 ## Description: PDF of the logistic distribution
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28
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29 function pdf = logistic_pdf (x)
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30
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31 if (nargin != 1)
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32 print_usage ();
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33 endif
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34
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35 cdf = logistic_cdf (x);
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36 pdf = cdf .* (1 - cdf);
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37
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38 endfunction