Mercurial > octave
view scripts/geometry/dsearchn.m @ 31213:bc385e42e09a
NEWS.8.md: Announce new legend property "itemhitfcn"
* NEWS.8.md: Announce new legend property "itemhitfcn".
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
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date | Mon, 29 Aug 2022 18:36:17 +0200 |
parents | 796f54d4ddbf |
children | 597f3ee61a48 |
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######################################################################## ## ## Copyright (C) 2007-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi}) ## @deftypefnx {} {@var{idx} =} dsearchn (@var{x}, @var{tri}, @var{xi}, @var{outval}) ## @deftypefnx {} {@var{idx} =} dsearchn (@var{x}, @var{xi}) ## @deftypefnx {} {[@var{idx}, @var{d}] =} dsearchn (@dots{}) ## Return the index @var{idx} of the closest point in @var{x} to the elements ## @var{xi}. ## ## If @var{outval} is supplied, then the values of @var{xi} that are not ## contained within one of the simplices @var{tri} are set to @var{outval}. ## Generally, @var{tri} is returned from @code{delaunayn (@var{x})}. ## ## The optional output @var{d} contains a column vector of distances between ## the query points @var{xi} and the nearest simplex points @var{x}. ## ## @seealso{dsearch, tsearch} ## @end deftypefn function [idx, d] = dsearchn (x, tri, xi, outval) if (nargin < 2) print_usage (); endif if (nargin == 2) [idx, d] = __dsearchn__ (x, tri); else [idx, d] = __dsearchn__ (x, xi); if (nargin == 4) idx2 = isnan (tsearchn (x, tri, xi)); idx(idx2) = outval; d(idx2) = outval; endif endif endfunction %!shared x, tri %! x = [-1,-1;-1,1;1,-1]; %! tri = [1,2,3]; %!assert (dsearchn (x,tri,[1,1/3]), 3) %!assert (dsearchn (x,tri,[1,1/3],NaN), NaN) %!assert (dsearchn (x,tri,[1,1/3],NA), NA) %!assert (dsearchn (x,tri,[1/3,1]), 2) %!assert (dsearchn (x,tri,[1/3,1],NaN), NaN) %!assert (dsearchn (x,tri,[1/3,1],NA), NA)