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1 ## Copyright (C) 1995, 1996, 1997, 2005, 2007 Kurt Hornik |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 3 of the License, or (at |
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8 ## your option) any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, see |
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17 ## <http://www.gnu.org/licenses/>. |
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18 |
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19 ## -*- texinfo -*- |
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20 ## @deftypefn {Function File} {} gamma_cdf (@var{x}, @var{a}, @var{b}) |
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21 ## For each element of @var{x}, compute the cumulative distribution |
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22 ## function (CDF) at @var{x} of the Gamma distribution with parameters |
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23 ## @var{a} and @var{b}. |
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24 ## @end deftypefn |
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25 |
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26 ## Author: TT <Teresa.Twaroch@ci.tuwien.ac.at> |
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27 ## Description: CDF of the Gamma distribution |
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28 |
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29 function cdf = gamma_cdf (varargin) |
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30 |
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31 if (nargin > 2) |
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32 varargin{3} = 1 ./ varargin{3}; |
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33 endif |
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34 |
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35 cdf = gamcdf (varargin{:}); |
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36 |
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37 endfunction |
