how to use fourier transform to analyze time series data?

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mahesh chathuranga
mahesh chathuranga 2014-5-19
编辑： Henric Rydén 2014-5-21
I have an time series signal.I want to calculate first,second,third harmonic curves according to the following research paper, using fourier transform.how to do it?please help me.thanks!

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回答（1 个）

Henric Rydén
Henric Rydén 2014-5-19
编辑：Henric Rydén 2014-5-21
Hi,
your question is not very clear but look up the fft command

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