mapsto.m

Lattice coding and decoding

function out = mapsto(in,x,y)

%MAPSTO Substitute matrix (array) elements
%   Y = MAPSTO(X,A,B) substitues all A elemetns in matrix (array) X to B
%   as one may expect Y = {X:A |-> B}.

%   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>

mask = y * (in == x);
out = in + mask;