Mercurial > octave-nkf
view scripts/statistics/distributions/hypergeometric_inv.m @ 3456:434790acb067
[project @ 2000-01-19 06:58:51 by jwe]
author | jwe |
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date | Wed, 19 Jan 2000 06:59:23 +0000 |
parents | f8dde1807dee |
children | 38c61cbf086c |
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## Copyright (C) 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} {} hypergeometric_inv (@var{x}, @var{m}, @var{t}, @var{n}) ## For each element of @var{x}, compute the quantile at @var{x} of the ## hypergeometric distribution with parameters @var{m}, @var{t}, and ## @var{n}. ## ## The parameters @var{m}, @var{t}, and @var{n} must positive integers ## with @var{m} and @var{n} not greater than @var{t}. ## @end deftypefn ## Author: KH <Kurt.Hornik@ci.tuwien.ac.at> ## Description: Random deviates from the hypergeometric distribution function inv = hypergeometric_inv (x, m, t, n) if (nargin != 4) usage ("hypergeometric_inv (x, m, t, n)"); endif if ((m < 0) | (t < 0) | (n <= 0) | (m != round (m)) | (t != round (t)) | (n != round (n)) | (m > t) | (n > t)) inv = NaN * ones (size (x)) else inv = discrete_inv (x, 0 : n, hypergeometric_pdf (0 : n, m, t, n)); endif endfunction