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1 ## Copyright (C) 2007 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} =} dsearch (@var{x}, @var{y}, @var{tri}, @var{xi}, @var{yi}) |
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21 ## @deftypefnx {Function File} {@var{idx} =} dsearch (@var{x}, @var{y}, @var{tri}, @var{xi}, @var{yi}, @var{s}) |
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22 ## Returns the index @var{idx} or the closest point in @code{@var{x}, @var{y})} |
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23 ## to the elements @code{[@var{xi}(:), @var{yi}(:)]}. The variable @var{s} is |
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24 ## accepted but ignored for compatibility. |
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25 ## @seealso{dsearchn, tsearch} |
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26 ## @end deftypefn |
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27 |
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28 function idx = dsearch (x, y, t, xi, yi, s) |
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29 if (nargin < 5 || nargin > 6) |
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30 print_usage (); |
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31 endif |
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32 idx = __dsearchn__ ([x(:), y(:)], [xi(:), yi(:)]); |
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33 endfunction |
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34 |
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35 %!shared x, y, tri |
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36 %! x = [-1;-1;1]; |
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37 %! y = [-1;1;-1]; |
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38 %! tri = [1,2,3]; |
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39 %!assert (dsearch(x,y,tri,1,1/3), 3); |
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40 %!assert (dsearch(x,y,tri,1/3,1), 2); |