1 ## Copyright (C) 2007-2012 David Bateman
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi})
21 ## @deftypefnx {Function File} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi}, @var{outval})
22 ## @deftypefnx {Function File} {@var{idx} =} dsearchn (@var{x}, @var{xi})
23 ## @deftypefnx {Function File} {[@var{idx}, @var{d}] =} dsearchn (@dots{})
24 ## Return the index @var{idx} or the closest point in @var{x} to the elements
25 ## @var{xi}. If @var{outval} is supplied, then the values of @var{xi} that are
26 ## not contained within one of the simplices @var{tri} are set to
27 ## @var{outval}. Generally, @var{tri} is returned from @code{delaunayn
29 ## @seealso{dsearch, tsearch}
32 function [idx, d] = dsearchn (x, tri, xi, outval)
33 if (nargin < 2 || nargin > 4)
38 [idx, d] = __dsearchn__ (x, tri);
40 [idx, d] = __dsearchn__ (x, xi);
42 idx2 = isnan (tsearchn (x, tri, xi));
50 %! x = [-1,-1;-1,1;1,-1];
52 %!assert (dsearchn(x,tri,[1,1/3]), 3);
53 %!assert (dsearchn(x,tri,[1,1/3],NaN), NaN);
54 %!assert (dsearchn(x,tri,[1,1/3],NA), NA);
55 %!assert (dsearchn(x,tri,[1/3,1]), 2);
56 %!assert (dsearchn(x,tri,[1/3,1],NaN), NaN);
57 %!assert (dsearchn(x,tri,[1/3,1],NA), NA);