Can't create 4 dimensional dft plan

[Ben Moran]

I'm able to create two and three dimensional backward fft plans, but not a 4-d plan (unless I'm doing something wrong).

This is on Ubuntu 9.10, 64-bit, with PyFFTW 0.2.1. It seems the call to fftw_plan_dft returns None.

import fftw3
import numpy as np
N=5

output3 = np.zeros((N,N,N), dtype=complex)
ifft3 = fftw3.Plan(output3, None, direction='backward', flags=['measure'])
# Works fine

output4 = np.zeros((N,N,N,N), dtype=complex)
ifft4 = fftw3.Plan(output4, None, direction='backward', flags=['measure'])
# Exception: Error creating fftw plan fftw_plan_dft for the given parameters

[Jochen Schroeder (cyco)]

Sorry for the delayed reply, real life is in the way. I haven't used 4d plans myself, I'll investigate. Thanks for reporting

[Jochen Schroeder (cyco)]

Sorry for taking so long this is now fixed in trunk (commit 49)