Raspberry Pi Forums

I've used matlab before but never Mathematica.

I'd like to do some fourier analysis with mathematica..

Can someone post a method to create a sin wave
plot it
do a forward fft and then plot the power spectrum?

FourierTransform is not what you need. That function computes a symbolic transform. You need Fourier instead to use on numerical data.

To generate an array, look up Table. To plot it, or its Fourier transform, use ListPlot. Fourier returns complex quantities, so you'll probably want Abs.