QuACN (version 1.8.0)

estrada: Estrada index

Description

This method calculates the Estrada index of a graph.

Usage

estrada(g)

Arguments

g

a graph as a graphNEL object.

Value

double-precision floating point value.

References

E. Estrada: Characterization of 3D molecular structure. Chemical Physics Letters, 319:713-718, 2000

Examples

library(graph)
set.seed(123)
g <- randomEGraph(as.character(1:8), 0.6)

estrada(g)