centers_to_edges

atompy.centers_to_edges(centers, lower=None, upper=None)

Work out bin edges from bin centers.

If the bins don’t have constant size, at least one limit has to be provided, from which the edges can be determined.

Attention

If centers are not the centers of all bins, or if lower or upper are not indeed the lower or upper edge, centers_to_edges will silently produce nonsense.

Parameters:

centersarray_like, shape(n)

centers of the bins

lower, uppperfloat, optional

Lower/upper limits of the range.

At least one limit must be provided if bins don’t have a constant size. If both lower and upper limits are provided, the lower one will be prioritized.

Returns:

edgesndarray, shape(n+1)

Edges of the bins.

See also

Hist1d.from_centers

Create a Hist1d directly from centers.

Examples

Get edges from equally spaced centers:

>>> ap.centers_to_edges([0.5, 1.5, 2.5, 3.5, 4.5])
[0. 1. 2. 3. 4. 5.]

Get edges from centers that are not equally spaced:

>>> ap.centers_to_edges([0.5, 1.5, 3.0, 4.5, 5.5], lower=0.0)
[0. 1. 2. 4. 5. 6.]
>>> ap.centers_to_edges([0.5, 1.5, 3.0, 4.5, 5.5], upper=6.0)
[0. 1. 2. 4. 5. 6.]