Note

This documents the development version of NetworkX. Documentation for the current release can be found here.

networkx.algorithms.isomorphism.numerical_edge_match

numerical_edge_match(attr, default, rtol=1e-05, atol=1e-08)

Returns a comparison function for a numerical edge attribute.

The value(s) of the attr(s) must be numerical and sortable. If the sorted list of values from G1 and G2 are the same within some tolerance, then the constructed function returns True.

Parameters
attrstring | list

The numerical edge attribute to compare, or a list of numerical edge attributes to compare.

defaultvalue | list

The default value for the numerical edge attribute, or a list of default values for the numerical edge attributes.

rtolfloat

The relative error tolerance.

atolfloat

The absolute error tolerance.

Returns
matchfunction

The customized, numerical edge_match function.

Examples

>>> import networkx.algorithms.isomorphism as iso
>>> nm = iso.numerical_edge_match("weight", 1.0)
>>> nm = iso.numerical_edge_match(["weight", "linewidth"], [0.25, 0.5])