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scipy.cluster.hierarchy.is_valid_im

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

Returns True if the inconsistency matrix passed is valid. It must be a by 4 numpy array of doubles. The standard deviations R[:,1] must be nonnegative. The link counts R[:,2] must be positive and no greater than .

Arguments :

• R : ndarray The inconsistency matrix to check for validity.
• warning : bool When True, issues a Python warning if the linkage matrix passed is invalid.
• throw : bool When True, throws a Python exception if the linkage matrix passed is invalid.
• name : string This string refers to the variable name of the invalid linkage matrix.

Returns :

• b : bool True iff the inconsistency matrix is valid.