annotate scripts/geometry/dsearchn.m @ 10791:3140cb7a05a1

Add spellchecker scripts for Octave and run spellcheck of documentation interpreter/doccheck: New directory for spelling/grammar scripts. interpreter/doccheck/README: Instructions for using scripts. interpreter/doccheck/spellcheck: Script to spellcheck a Texinfo file. interpreter/doccheck/aspell.conf: GNU Aspell configuration file for Octave documentation. interpreter/doccheck/aspell-octave.en.pws: Private Aspell dictionary. interpreter/doccheck/add_to_aspell_dict: Script to add new Octave-specific words to private Aspell dictionary. interpreter/octave.texi: New @nospell macro which forces Aspell to ignore the word marked by the macro. interpreter/mk_doc_cache.m: Skip new @nospell macro when building doc_cache.
author Rik <octave@nomad.inbox5.com>
date Sat, 17 Jul 2010 19:53:01 -0700
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children be55736a0783
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John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2007, 2009 David Bateman
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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} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi})
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21 ## @deftypefnx {Function File} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi}, @var{outval})
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22 ## @deftypefnx {Function File} {@var{idx} =} dsearchn (@var{x}, @var{xi})
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23 ## @deftypefnx {Function File} {[@var{idx}, @var{d}] =} dsearchn (@dots{})
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24 ## Returns the index @var{idx} or the closest point in @var{x} to the elements
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25 ## @var{xi}. If @var{outval} is supplied, then the values of @var{xi} that are
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26 ## not contained within one of the simplices @var{tri} are set to
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27 ## @var{outval}. Generally, @var{tri} is returned from @code{delaunayn
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28 ## (@var{x})}.
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29 ## @seealso{dsearch, tsearch}
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30 ## @end deftypefn
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31
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32 function [idx, d] = dsearchn (x, t, xi, outval)
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33 if (nargin < 2 || nargin > 4)
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34 print_usage ();
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35 endif
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36
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37 if (nargin == 2)
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38 [idx, d] = __dsearchn__ (x, t);
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39 else
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40 [idx, d] = __dsearchn__ (x, xi);
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41 if (nargin == 4)
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42 idx2 = isnan (tsearchn (x, t, xi));
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43 idx(idx2) = outval;
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44 d(idx2) = outval;
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45 endif
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46 endif
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47 endfunction
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48
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49 %!shared x, tri
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50 %! x = [-1,-1;-1,1;1,-1];
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51 %! tri = [1,2,3];
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52 %!assert (dsearchn(x,tri,[1,1/3]), 3);
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53 %!assert (dsearchn(x,tri,[1,1/3],NaN), NaN);
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54 %!assert (dsearchn(x,tri,[1,1/3],NA), NA);
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55 %!assert (dsearchn(x,tri,[1/3,1]), 2);
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56 %!assert (dsearchn(x,tri,[1/3,1],NaN), NaN);
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57 %!assert (dsearchn(x,tri,[1/3,1],NA), NA);