how can plot such a signal s(-t-5)?

can anyone help me to make such a signal s(-t-5) from signal s? I have tried the following code: fliplr([zeros(1,5) s]) Is it right?

Answer 1

[Abhiram Bhanuprakash]

Hi sH,

I think your approach is right, and it accounts for the Y axis values.

But, for the X axis indices, I think you should do something like this:

Say you have a signal s(n) = [1 2 3 4], and you wish to obtain s1(n) = s(-n-5):

s = [1 2 3 4];
inds = 0:length(s)-1;
figure, plot(inds,s); %considering time index 0 as the origin
s1 = fliplr([zeros(1,5) a]);
flippedInds = -(length(s1)-1):0;
figure, plot(flippedInds,s1);

For discrete signal plots, you can use the stem function instead of plot.

Hope this helps,

Cheers!

Abhiram.

[Walter Roberson]

Should the

s1 = fliplr([zeros(1,5) a]);

be

s1 = fliplr([zeros(1,5) s]);

?

[Abhiram Bhanuprakash]

Oops, sorry, my mistake.

It should be

s1 = fliplr([zeros(1,5) s]);

Thanks Walter for pointing it out.

[sH]

thanks everyone