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annotate scripts/geometry/voronoin.m @ 7007:6304d9ea0a30

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[project @ 2007-10-11 16:26:36 by jwe]
author jwe
date Thu, 11 Oct 2007 16:26:37 +0000
parents 8618f29520c6
children 93c65f2a5668
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1 ## Copyright (C) 2000 Kai Habel
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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 2, or (at your option)
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8 ## 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, write to the Free
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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18 ## 02110-1301, USA.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {[@var{C}, @var{F}] =} voronoin (@var{pts})
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22 ## @deftypefnx {Function File} {[@var{C}, @var{F}] =} voronoin (@var{pts}, @var{options})
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23 ## computes n- dimensional voronoi facets. The input matrix @var{pts}
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24 ## of size [n, dim] contains n points of dimension dim.
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25 ## @var{C} contains the points of the voronoi facets. The list @var{F}
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26 ## contains for each facet the indices of the voronoi points.
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27 ##
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28 ## A second optional argument, which must be a string, contains extra options
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29 ## passed to the underlying qhull command. See the documentation for the
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30 ## Qhull library for details.
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31 ## @seealso{voronoin, delaunay, convhull}
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32 ## @end deftypefn
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33
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34 ## Author: Kai Habel <kai.habel@gmx.de>
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35 ## First Release: 20/08/2000
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36
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37 ## 2003-12-14 Rafael Laboissiere <rafael@laboissiere.net>
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38 ## Added optional second argument to pass options to the underlying
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39 ## qhull command
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40
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41 function [C, F] = voronoin (pts, opt)
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42
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43 if (nargin != 1 && nargin != 2)
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44 print_usage ();
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45 endif
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46
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47 [np, dims] = size (pts);
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48 if (np > dims)
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49 if (nargin == 1)
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50 [C, F, infi] = __voronoi__ (pts);
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51 elseif ischar(opt)
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52 [C, F, infi] = __voronoi__ (pts, opt);
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53 else
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54 error ("voronoin: second argument must be a string");
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55 endif
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56
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57 else
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58 error ("voronoin: number of points must be greater than their dimension")
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59 endif
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60 endfunction