X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fcommunications-1.1.1%2Fhelintrlv.m;fp=octave_packages%2Fcommunications-1.1.1%2Fhelintrlv.m;h=9946de0f0c747d5ce34d1b653eb2633c0f5b7ae0;hp=0000000000000000000000000000000000000000;hb=f5f7a74bd8a4900f0b797da6783be80e11a68d86;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/communications-1.1.1/helintrlv.m b/octave_packages/communications-1.1.1/helintrlv.m
new file mode 100644
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+++ b/octave_packages/communications-1.1.1/helintrlv.m
@@ -0,0 +1,71 @@
+## Copyright (C) 2010 Mark Borgerding <mark@borgerding.net>
+##
+## 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{outdata} =} helintrlv (@var{data}, @var{col}, @var{ngrp},@var{stp})
+## @var{col}-by-@var{ngrp}.
+## @seealso{heldeintrlv}
+## @end deftypefn
+
+function [outdata,outstate] = helintrlv(data,col,ngrp,stp,init_state)
+
+	if (nargin < 4  ||nargin>5)
+		error('usage : interlvd = helintrlv(data,col,ngrp,stp)');
+	end
+
+	if(~isscalar(col) || ~isscalar(ngrp))
+		error("col and ngrp must be integers");
+	end
+	
+	if( col ~= floor(col)|| ngrp ~= floor(ngrp))
+		error("col and ngrp must be integers");
+	end
+
+	didTranspose=0;
+	if ( isvector(data) && columns(data) > rows(data) )
+		data = data.';
+		didTranspose=1;
+	end
+
+	s = size(data);
+
+	if s(1) ~= col*ngrp
+		error("The length of data must be equals to ngrp*col");
+	end
+
+	if nargin==4
+		init_state = zeros(stp*col*(col-1)/2,s(2));
+	end
+
+	outstate =[];
+	# for each column
+	for k = 1:s(2)
+		tmp = reshape( data(:,k) , ngrp, col );
+		instate = init_state(:,k);
+		outstateCol=[];
+		for k1=2:col
+			curStepSize = (k1-1)*stp;
+			tmpCol= [instate(1:curStepSize) ;tmp(:,k1)];
+			tmp(:,k1) = tmpCol(1:ngrp);
+			outstateCol=[outstateCol;tmpCol(end+1-curStepSize:end)];
+			instate = instate(curStepSize+1:end);
+		end
+		outdata(:,k) = reshape(tmp.',s(1),1);
+		outstate =  [outstate outstateCol];
+	end
+
+	if didTranspose
+		outdata = outdata.';
+	end