fourier transform info or data

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harley
harley 2013-8-15
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);

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Image Analyst
Image Analyst 2013-8-15
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.
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harley
harley 2013-8-15
when i get rid of duplicate y values i get the error,
Vectors must be the same lengths.
how do i get around this.
Image Analyst
Image Analyst 2013-8-15
Are you trying to plot the time domain signals? Then you must get rid of the corresponding ts values also.

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Azzi Abdelmalek
Azzi Abdelmalek 2013-8-15
plot(t,f)
%or
stem(t,f)

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