Mercurial > hg > octave-lyh
view scripts/general/private/__splinen__.m @ 10687:a8ce6bdecce5
Improve documentation strings.
author | Rik <octave@nomad.inbox5.com> |
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date | Tue, 08 Jun 2010 20:22:38 -0700 |
parents | d1978e7364ad |
children | fe3c3dfc07eb |
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## Copyright (C) 2007, 2008, 2009 David Bateman ## ## 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 ## <http://www.gnu.org/licenses/>. ## Undocumented internal function. ## -*- texinfo -*- ## @deftypefn {Function File} {@var{yi} =} __splinen__ (@var{x}, @var{y}, @var{xi}) ## Undocumented internal function. ## @end deftypefn ## FIXME: Allow arbitrary grids.. function yi = __splinen__ (x, y, xi, extrapval, f) if (nargin != 5) error ("__splinen__: Incorrect number of arguments"); endif ## ND isvector function. isvec = @(x) numel (x) == length (x); if (!iscell (x) || length(x) < ndims(y) || any (! cellfun (isvec, x)) || !iscell (xi) || length(xi) < ndims(y) || any (! cellfun (isvec, xi))) error ("__splinen__: %s: non gridded data or dimensions inconsistent", f); endif yi = y; for i = length(x):-1:1 yi = permute (spline (x{i}, yi, xi{i}(:)), [length(x),1:length(x)-1]); endfor [xi{:}] = ndgrid (cellfun (@(x) x(:), xi, "UniformOutput", false){:}); idx = zeros (size(xi{1})); for i = 1 : length(x) idx |= xi{i} < min (x{i}(:)) | xi{i} > max (x{i}(:)); endfor yi(idx) = extrapval; endfunction