scipy.cluster.hierarchy.is_valid_im¶

scipy.cluster.hierarchy.is_valid_im(R, warning=False, throw=False, name=None)[source]¶

Returns True if the inconsistency matrix passed is valid.

It must be a $n$ 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 $n-1$ .

Parameters:

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.

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.

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