No vertices, transitivity zero, NULL weights:
( )

No vertices, transitivity zero, NULL weights, no vs:
( )

No vertices, transitivity zero, no weights:
( )

No vertices, transitivity zero, no weights, no vs:
( )

No vertices, transitivity NAN:
( )

No vertices, transitivity NAN, no vs:
( )

One vertex, transitivity zero:
( 0 )

One vertex, transitivity NaN:
( NaN )

One vertex, transitivity zero, vs one:
( 0 )

One vertex, transitivity NaN, vs one:
( NaN )

Simple graph, NULL weights, transitivity NAN:
Warning: No weights given for Barrat's transitivity, unweighted version is used.
( 1 0.666667 0.666667 0.333333 NaN NaN )

Simple graph, with weights, transitivity NAN:
( 1 0.75 0.625 0.277778 NaN NaN )

Simple graph, with weights, transitivity zero:
( 1 0.75 0.625 0.277778 0 0 )

Simple graph, with weights, transitivity zero, vss none:
( )

Wrong weight length, vss all:
Wrong weight length, vss none: