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How to transform y1(t) to Y1(S) in frequency domain.

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vahid torabi 2014-12-20

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https://ww2.mathworks.cn/matlabcentral/answers/167357-how-to-transform-y1-t-to-y1-s-in-frequency-domain

评论： vahid torabi 2014-12-20

采纳的回答： Image Analyst

y1 to Y1.JPG

By using of Fast Fourier Transform (FFT) in MATLAB,I want to transform y1(t) to Y1(S) in frequency domain.

How can I do that?

I have the y1(t) in workspace as .mat data.

I've attached a .JPG file.

Thank you so much

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Image Analyst 2014-12-20

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Did you try

Y1 = fft(y1);

???

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vahid torabi 2014-12-20

I want to plot Y1 ; how about the horizontal axis?

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