/usr/share/octave/packages/communications-1.1.1/deintrlv.m is in octave-communications-common 1.1.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | ## 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
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