Fast 1D and 2D histogram functions in Python
Sometimes you just want to compute simple 1D or 2D histograms with regular bins. Fast. No nonsense. Numpy’s histogram functions are versatile, and can handle for example non-regular binning, but this versatility comes at the expense of performance.
The fast-histogram mini-package aims to provide simple and fast histogram functions for regular bins that don’t compromise on performance. It doesn’t do anything complicated - it just implements a simple histogram algorithm in C and keeps it simple. The aim is to have functions that are fast but also robust and reliable. The result is a 1D histogram function here that is 7-15x faster than numpy.histogram, and a 2D histogram function that is 20-25x faster than numpy.histogram2d.
