Hello all, I am using matplotlib.mlab.psd to find power spectra of measured data. Sometimes it happens that I use the automatic zero padding (if the length of my measured data is smaller than nFFT) and detrending (pylab.detrend_mean) at the same time.
I think that the psd-algorithm does the zero padding *first* and *then* uses the detrend function. For my application this is not good because it introduces low-frequency signals that I can see in the spectrum. So the detrending does not work as good as it does when there is no zero padding. What is the reason for this order of applying zero padding and detrending? Wouldn't it make sense to change it? Thanks Lars -- Dipl.-Ing. Lars Friedrich Photonic Measurement Technology Department of Microsystems Engineering -- IMTEK University of Freiburg Georges-Köhler-Allee 102 D-79110 Freiburg Germany phone: +49-761-203-7531 fax: +49-761-203-7537 room: 01 088 email: [EMAIL PROTECTED] ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
