Fast histogramming in python built on pybind11
Project description
# pygram11
[](https://builds.sr.ht/~ddavis/pygram11?) [](https://pygram11.readthedocs.io/en/stable/?badge=stable)  [](https://pypi-hypernode.com/project/pygram11/) [](https://github.com/ambv/black)
Simple and fast histogramming in python via [pybind11](https://github.com/pybind/pybind11) and (optionally) [OpenMP](https://www.openmp.org/)
pygram11 provides fast functions for generating histograms (and their sums-of-weights squared). Fixed and variable width binned histograms are supported. The API is very simple, check out the documentation.
## Installing
pygram11 requires only NumPy and pybind11 (and therefore a C++ compiler with C++11 support).
### From PyPI
`none $ pip install pygram11 `
### From Source
`none $ git clone https://github.com/drdavis/pygram11.git $ cd pygram11 $ pip install . `
## In Action
A fixed bin width histogram of weighted data in one dimension, accelerated with OpenMP:
`python >>> x = np.random.randn(10000) >>> w = np.random.uniform(0.8, 1.2, 10000) >>> h, sw2 = pygram11.histogram(x, bins=40, range=(-4, 4), weights=w, omp=True) >>> stat_err = np.sqrt(sw2) `
A variable bin width histogram in two dimensions:
`python >>> x = np.random.randn(10000) >>> y = np.random.randn(10000) >>> xbins = [-2.0, -1.0, -0.5, 1.5, 2.0] >>> ybins = [-3.0, -1.5, -0.1, 0.8, 2.0] >>> h = pygram11.histogram2d(x, y, bins=[xbins, ybins]) `
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