pygram11.fix1d¶

pygram11.fix1d(x, bins=10, range=None, weights=None, density=False, flow=False)[source]¶

Histogram data with fixed (uniform) bin widths.

Parameters

x (array_like) – Data to histogram.
bins (int) – The number of bins.
range ((float, float), optional) – The minimum and maximum of the histogram axis.
weights (array_like, optional) – The weights for each element of x.
density (bool) – If True, normalize histogram bins as value of PDF such that the integral over the range is one.
flow (bool) – If True, the under and overflow bin contents are added to the first and last bins, respectively.

Returns

numpy.ndarray – The bin counts.
numpy.ndarray – The standard error of each bin count, \(\sqrt{\sum_i w_i^2}\).

Examples

A histogram of x with 20 bins between 0 and 100:

>>> h, __ = fix1d(x, bins=20, range=(0, 100))

The same data, now histogrammed with weights:

>>> w = np.abs(np.random.randn(x.shape[0]))
>>> h, h_err = fix1d(x, bins=20, range=(0, 100), weights=w)