how to do FFT

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Vasilis Papadopoulos
评论： Star Strider 2016-4-10
Hi, I have an assignment in wich i need to apply FFT in matlab. The problem is that i don't have any function or frequency because all of my data came out from an accelerometer. although i have sampling rate, sampling time interval and number of samples i don't know the frequency or the function of the sine wave formed by my data. Can you please enlighten me how to do my FFT? any help would be greatly appreciated

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Star Strider
Star Strider 2016-4-8
See the documentation for the R2015a version of fft. The code between the top two plot figures is what you need to do.
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Vasilis Papadopoulos
Vasilis Papadopoulos 2016-4-10
thank you Sir
Star Strider
Star Strider 2016-4-10
My pleasure.

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