esda.overlay_entropy

esda.overlay_entropy(a, b, standardize=True, local=False, base=2.718281828459045)

The entropy of how n zones in a are split by m partitions in b, where n is the number of polygons in a and m is the number of partitions in b. This is the “overlay entropy”, since the set of polygons constructed from intersection(a,b) is often called the “overlay” of A onto B.

Larger when zones in a are uniformly split into many even pieces by partitions in b, and small when zones in A correspond well to zones in B.

Parameters:

ageometry array of polygons

a set of polygons (the “target”) for whom the areal entropy is calculated

bgeometry array of polygons

a set of polygons (the “frame”) that splits a

Returns:

(n,) array expressing the entropy of the areal distributions

of a’s splits by partition b.