function y=shift(x,t)% SHIFT Shift the signal on the time axis.%% Y=SHIFT(X,T) shifts the time of signal X by time T. In essence,% the beginning instant of the signal X is increased by time T.% $Id: shift.m 64 2005-01-17 09:52:58Z mairas $xt=x.time;xt=set(xt,'begin',xt.begin+t);y=set(x,'time',xt);