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, anisk@feld.cvut.cz%   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;