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scipy.cluster.hierarchy.is_monotonic

scipy.cluster.hierarchy.is_monotonic(Z)

Return True if the linkage passed is monotonic.

The linkage is monotonic if for every cluster $s$ and $t$ joined, the distance between them is no less than the distance between any previously joined clusters.

Parameters:

Z : ndarray

The linkage matrix to check for monotonicity.

Returns:

b : bool

A boolean indicating whether the linkage is monotonic.