blur.m

Lattice coding and decoding

function blured = blur(in,bl_length,step)

%BLUR Multiple vector coordinates.
%  Y = BLUR(X,L) multiples a X coords.
%
%  Y = BLUR(X,L,S) same as above, but the subsequent subset of coords is
%  increased by step S. Default value for S is 0. X must be a column
%  vector. 
%
%  Example:
%       a = [1:3]'
%       y1 = blur(x,4)
%       y2 = blur(x,4,2)
%
%  See also CLUSTER, SPAN.

%   Copyright 2001-2003 Kamil Anis, [e-mail]
%   Dept. of Radioelectronics, 
%   Faculty of Electrical Engineering
%   Czech Technical University in Prague
%   $Revision: 0.1 $  $Date: 2003/1/16 17:33:28 $
%   --
%   <additional stuff goes here>

if exist('step') == 0
    step = 0;
end

l = length(in);
n = 1:length(in);
series = bl_length * n - bl_length + 1;

for i = 0:bl_length - 1
  blured(series + i,1) = in + i * step;
end