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1 ## Copyright (C) 2005 John W. Eaton |
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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} {} unidrnd (@var{mx}); |
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21 ## @deftypefnx {Function File} {} unidrnd (@var{mx}, @var{v}); |
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22 ## @deftypefnx {Function File} {} unidrnd (@var{mx}, @var{m}, @var{n}, @dots{}); |
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23 ## Return random values from discrete uniform distribution, with maximum |
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24 ## value(s) given by the integer @var{mx}, which may be a scalar or |
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25 ## multidimensional array. |
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26 ## |
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27 ## If @var{mx} is a scalar, the size of the result is specified by |
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28 ## the vector @var{v}, or by the optional arguments @var{m}, @var{n}, |
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29 ## @dots{}. Otherwise, the size of the result is the same as the size |
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30 ## of @var{mx}. |
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31 ## @end deftypefn |
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32 |
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33 ## Author: jwe |
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34 |
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35 function retval = unidrnd (n, varargin) |
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36 if (nargin == 1) |
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37 dims = size (n); |
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38 elseif (nargin == 2) |
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39 if (rows (varargin{1}) == 1 && columns (varargin{1}) > 1) |
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40 dims = varargin{1}; |
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41 else |
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42 error ("unidrnd: invalid dimension vector"); |
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43 endif |
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44 elseif (nargin > 2) |
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45 for i = 1:nargin-1 |
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46 if (! isscalar (varargin{i})) |
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47 error ("unidrnd: expecting scalar dimensions"); |
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48 endif |
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49 endfor |
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50 dims = [varargin{:}]; |
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51 else |
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52 error ("unidrnd (n, ...)"); |
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53 endif |
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54 if (isscalar (n) |
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55 || (length (size (n)) == length (dims) && all (size (n) == dims))) |
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56 retval = ceil (rand (dims) .* n); |
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57 else |
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58 error ("unidrnd: dimension mismatch"); |
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59 endif |
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60 endfunction |
