fourier transform info or data

Simple question for those that are familiar with fourier transform. how do i do a fourier transform on this data below, ts=time, ft=amplitude.
ts = [-10 -5 -5 5 5 10];
ft = [0 0 1 1 0 0 ];
plot(ts,ft);

 采纳的回答

Image Analyst
Image Analyst 2013-8-15

0 个投票

Call fft(), but first get rid of duplicate y values for a given x value. Then you should see the sinc function you are expecting.

5 个评论

thanks for replying, what coding would you recommend to stream line what i am trying to do?
when i get rid of duplicate y values i get the error,
Vectors must be the same lengths.
how do i get around this.
Are you trying to plot the time domain signals? Then you must get rid of the corresponding ts values also.

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