# diameter(Graph) -- Computes the diameter of a graph

## Synopsis

• Function: diameter
• Usage:
d = diameter G
• Inputs:
• G, an instance of the type Graph,
• Outputs:

## Description

The diameter of a graph is the maximum of the distances between all the vertexSet of G. If the graph is not connected, the diameter is infinity.

 i1 : G = graph({{1,2},{2,3},{3,4}},EntryMode=>"edges"); i2 : d = diameter G o2 = 3 i3 : G = graph({1,2,3,4},{{2,3},{3,4}}); i4 : d = diameter G o4 = infinity o4 : InfiniteNumber