what about scipy.fftpack.fftshift? In [7]: x = scipy.arange(25).reshape(5,5) In [8]: x Out[8]: array([[ 0, 1, 2, 3, 4], [ 5, 6, 7, 8, 9], [10, 11, 12, 13, 14], [15, 16, 17, 18, 19], [20, 21, 22, 23, 24]]) In [9]: scipy.fftpack.fftshift(x) Out[9]: array([[18, 19, 15, 16, 17], [23, 24, 20, 21, 22], [ 3, 4, 0, 1, 2], [ 8, 9, 5, 6, 7], [13, 14, 10, 11, 12]]) On 9/13/07, Emanuele Zattin <emanuelez@gmail.com> wrote:

hello, i would like to show the magnitude of the fourier transform of an image. interesting informations appear in the four corners of the resulting image, but i would like to shift the matrix in order to have the corners meeting each other in the middle. any hint?

-- Emanuele Zattin --------------------------------------------------- -I don't have to know an answer. I don't feel frightened by not knowing things; by being lost in a mysterious universe without any purpose — which is the way it really is, as far as I can tell, possibly. It doesn't frighten me.- Richard Feynman _______________________________________________ SciPy-user mailing list SciPy-user@scipy.org http://projects.scipy.org/mailman/listinfo/scipy-user