scipy.cluster.hierarchy.is_valid_im

scipy.cluster.hierarchy.is_valid_im(R, warning=False, throw=False, name=None)

Return True if the inconsistency matrix passed is valid.

It must be a \(n\) by 4 array of doubles. The standard deviations R[:,1] must be nonnegative. The link counts R[:,2] must be positive and no greater than \(n-1\).

Parameters:

R : ndarray

The inconsistency matrix to check for validity.

warning : bool, optional

When True, issues a Python warning if the linkage matrix passed is invalid.

throw : bool, optional

When True, throws a Python exception if the linkage matrix passed is invalid.

name : str, optional

This string refers to the variable name of the invalid linkage matrix.

Returns:

b : bool

True if the inconsistency matrix is valid.