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

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Negar 2011-3-31

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https://ww2.mathworks.cn/matlabcentral/answers/4417-how-to-plot-a-time-delayed-ersion-of-a-signal

评论： Amit Aryal 2015-3-27

采纳的回答： Paulo Silva

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')

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Jan 2011-3-31

Please use code formatting to improve the readability of the code.

"Some strange results" is a vague description only. It is always a good idea to describe the results with as much details as needed to solve the problem.

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Paulo Silva 2011-3-31

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https://ww2.mathworks.cn/matlabcentral/answers/4417-how-to-plot-a-time-delayed-ersion-of-a-signal#answer_6149

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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'])

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Negar 2011-3-31

Thanks a lot :)

Amit Aryal 2015-3-27

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'])

I tried the above code but no delay signal produced. Both signals superimposed one on top of another!

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