Spectral
This MR adds a spectral
module to do the various density estimation operations we need.
The main function is coarse_grain_spectrogram
which takes a gwpy.spectrogram.Spectrogram
object and performs averages in time and frequency to estimate the density.
The current testing is not sufficient, but I'm adding this to enable more discussion on what testing we need.
cc @arianna.renzini @joseph.romano @sharan.banagiri @ioannis.michaloliakos @andrew.matas