I have a time series data I am trying to find the fft .But it gives keyerror :Aligned when trying to get the value my data looks like below this is the code: import datetime import numpy as np imp...

I'm new in android, and I want to import the jfftpack to my project in android studio anda i don't know how to import it. The original code was import ca.uol.aig.realdoublefft and I'don't know wh...

I'm trying to multiply two 2D arrays that were transformed with fftpack_rfft2d() (SciPy's FFTPACK RFFT) and the result is not compatible with what I get from scipy_rfft2d() (SciPy's FFT RFFT). The...

The scipy.fftpack.rfft function returns the DFT as a vector of floats, alternating between the real and complex part. This means to multiply to DFTs together (for convolution) I will have to do the...

Let say you use the dct function, then do no manipulation of the data and use the invert transform; wouldn't the inverted data be the same as the pre-transformed data? Why the floating point issue?...