MATLAB: How to plot a time-delayed ersion of a signal ?

plot

cananyone tell me how to plot the time-delayed version of a signal ?

Imagine the simplest case, y=cos(x), I want to delay it by 2 units. But I get some strange results!

clc ; clear all; close all x=(0.00001:0.01:2)*pi; y=cos(x); plot(x,y) hold on [Nrow Ncol]=size(y); m=2; % Delay step z=zeros([Nrow Ncol]); for i=3:Ncol-m j=i-m; z(i,1)=y(j,1);

end plot(z,'r')

Best Answer

x=0:0.01:2*pi
y=cos(x)
plot(x,y)
hold on
d=2;
y=[ones(1,d)*nan y(1:end-d)];
plot(x,y,'r')
legend('signal',['delayed signal by' num2str(d) 'units'])

Related Solutions

MATLAB: For 2-D line plot

If y is a vector, then plot(y) is the same as plot(1:length(y), y)

If y is a 2D matrix, then the assumed x is 1:size(y,1) and one line is created for each column of y.

MATLAB: Plot problem

Something like,

sp1 = subplot(3,1,1);
[xi,f]=ksdensity(X); 
plot(f,xi); 
line(repmat(X,2,1),repmat([0;0.1*max(xi)],1,length(X)),'color','r' ); 
sp2 = subplot(3,1,2);
[xi,f]=ksdensity(Y); 
plot(f,xi); 
line(repmat(Y,2,1),repmat([0;0.1*max(xi)],1,length(Y)),'color','r' );
[Rxx,lags] = xcorr(X,Y);
[Z,delay] = max(Rxx);
lags(delay);
if delay>0
    hold(sp1,'on');
    [xi,f]=ksdensity(Y+delay); 
    plot(sp1,f,xi);
else
    hold(sp2,'on');
    [xi,f]=ksdensity(X+delay); 
    plot(sp2,f,xi);
end

Best Answer

Related Solutions

MATLAB: For 2-D line plot

MATLAB: Plot problem

Related Question