[boost] boost graph: How to add existing subgraphs to the root graph and how to use boost::write_graphviz with subgraphs?

Subject: [boost] boost graph: How to add existing subgraphs to the root graph and how to use boost::write_graphviz with subgraphs?
From: Lisa Wilhelm (wilhelm_lisa_at_[hidden])
Date: 2008-09-10 03:02:33

Hi,


I am a newbie in using boost libraries and template programming, and I try to get familiar with the graph library at the moment. 

My first problem is, that I want to create subgrahps in "sub-functions" and create the whole graph out of these subgraphs in the calling function. 
I tried to create the subgraph in the calling function and pass it to the sub-function, but then, the new vertices were added to the root-graph and not to the subgraph.
I solved this in the calling-function with adding all the new vertices and their edges again to the subgraph. 
Is there a better way to do that?

My second problem is just as mentioned in the  subject line. How to use boost::write_graphviz to print out subgraphs? It works for "normal" graphs but not for subgraphs.

I hope this is the right place to ask these questions.
Thanks for your answers.

Lisa


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