From: Loïc Joly (loic.joly_at_[hidden])
Date: 2006-09-28 05:21:00
I have a graph that does not have vertex_id. Each node in my graph might
be uniquely identified, because I have a property map to some objects
which have a unique id.
However, when I try to write the graph to graphviz, it requires this
vertex_id property. I bother me to add a vertex_id property to my graph
just for this purpose, and I wonder if it could be possible to extend
the write_graphviz in order to allow the user to customize the vertex id
that is written in the dot file.
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