Question: Matrix and power spectrum

June 05 2014 mkj256 30
0

I have a matrix (1002,2) where first column isthe time and the second is numerical solution of an angle.My angle should be oscillating periodically but I am getting a noise at large times. I need to check if this noise contains certain frequencies in it so I need to plot a power spectrum of my data. How can I do that 

 

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