fft a subset of dimensions

[AshtonSBradley]

Hi, very cool to see a generic julia FFT. My use case is for Complex{BigFloat} but I only want to fft and ifft over one dimension of a 2D array. I need to do this thousands of times, and apply a matrix in the other dimensions. I notice that only arrays of up to 2 dimensions are currently supported. So:

• Do you plan to allow any array dims?
• Is it possible to support the dims argument of the FFTW interface?

Thanks for the great work

[dannys4]

Hi, Sorry for such a late response-- I typed one out two months ago and it seems I didn't press submit (in my defense, I was out of town). The main branch supports taking up to 2D FFTs with support for the dims argument supplied by FFTW (in fact, this is a feature of AbstractFFTs, whose interface I ended up adopting). At the moment, I wasn't planning on adding support for multidimensional FFTs past two dimensions, at least for awhile. For your usecase, switching to the main branch should work (I believe the tests pass, though it's been awhile).