This is documentation for an old release of SciPy (version 0.10.1). Read this page Search for this page in the documentation of the latest stable release (version 1.15.1).

scipy.cluster.hierarchy.is_valid_linkage

scipy.cluster.hierarchy.is_valid_linkage(Z, warning=False, throw=False, name=None)

Checks the validity of a linkage matrix. A linkage matrix is valid if it is a two dimensional nd-array (type double) with rows and 4 columns. The first two columns must contain indices between 0 and . For a given row i, and (i.e. a cluster cannot join another cluster unless the cluster being joined has been generated.)

Parameters :

Z : array_like

Linkage matrix.

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 iff the inconsistency matrix is valid.