Fourier for spacial distribution of field

Hi everyone! So, I have an electric motor of which I need to evaluate the spatial distribution of Induction Field (B) in its airgap. I have extracted a 2x361 matrix containing the angles from 0° to 360° in the first raw and the corresponding value o B in the second one.

Once plotted, I obtain the spatial distribution of B that I need. Now though, I need to extract the fundamental sinusoid but I am having some trouble applying Fourier with the software. Can anyone help me?

The waveform is periodic with a 360° period, I leave here the plot for context (i'm going to take more samples in the final version).

Answer 1

[Chaitanya Mallela]

Hi

Can you demonstrate the error you are facing while applying Fourier to the matrix?

Also you can refer the documentation https://www.mathworks.com/help/signal/ref/seqperiod.html to extract the period from any sequence.