[boost] [graph] zero based dense vertices?

From: James (James.Sutherland_at_[hidden])
Date: 2007-05-23 18:50:06

I am a new user of boost::graph.

It appears from my experimentation with it that bgl requires a dense index
set for the vertices.  In other words, if the vertices have indexes 5, 7, 8
then the graph automatically pads indices from 0 to 8.

Is this required, or may the vertex index set be arbitrary?

Thanks for any feedback,

James