X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fcommunications-1.1.1%2Fdeintrlv.m;fp=octave_packages%2Fcommunications-1.1.1%2Fdeintrlv.m;h=031451bd5aafea5179fd9b02a839a8da3fabd98a;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/communications-1.1.1/deintrlv.m b/octave_packages/communications-1.1.1/deintrlv.m
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+## Copyright (C) 2008 Sylvain Pelissier <sylvain.pelissier@gmail.com>
+##
+## This program 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.
+##
+## This program 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
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{deintrlvd} =} deintrlv (@var{data}, @var{elements})
+## Restore elements of @var{data} according to @var{elements}.
+## @seealso{intrlv}
+## @end deftypefn
+
+function deintrlvd = deintrlv(data,elements)
+	if(nargin < 2 || nargin >2)
+		error('usage : deinterlvd = deinterlv(data,elements)');
+	end
+	
+	if(~isvector(elements))
+		error("Elements must be a vector");
+	end
+	
+	ind = 1:length(elements);
+	invperm(elements) = ind;
+	
+	if(isvector(data))
+		if(length(elements) ~= length(data) || any(sort(elements) ~= 1:length(data)))
+			error("elements must be a permutation of data indices");
+		end
+		deintrlvd = data(invperm);
+	else
+		if(length(elements) ~= size(data,1) || any(sort(elements) ~= 1:size(data,1)))
+			error("elements must be a permutation of data indices");
+		end
+		deintrlvd = data(invperm,:);
+	end