2008/7/29 Felix Richter <[EMAIL PROTECTED]>: > I learned a few things in the meantime: > > In my installation, NumPy uses fftpack_lite while SciPy uses FFTW3. There are > more test cases in SciPy which all pass. So I am confirmed my problem is a > pure usage problem. > One thing I was confused about is the fact that even if I calculate the > function over a certain interval, I cannot tell FFT which interval this is, > it will instead assume [0...n]. So actually I did not transform a Lorentz > function centered at zero but rather centered at 500. > Unfortunately, this solves only half of my problem, because I still cannot > reproduce the exact FT. I'll ask for that on the SciPy list, this now seems > more appropriate.
Felix, Do your answers differ from the theory by a constant factor, or are they completely unrelated? Stéfan _______________________________________________ Numpy-discussion mailing list [email protected] http://projects.scipy.org/mailman/listinfo/numpy-discussion
