Does anyone know how the ROOT FFT handles errors associated with a histogram? For instance, if I create a histogram that has error bars included on it and I FFT the histogram, how does the FFT handle those errors from the original histogram?
I don’t think that the TVirtualFFT is able to deal with any “errors” (and so the “error bars” of the source histogram are neglected, I believe).
I understand that the TVirtualFFT uses the FFTW library. Is it possible that the FFTW library handles these errors in a certain way?