Re: [Boost-users] BGL: interrupting breadth_first_search() at a certain distance/predicate?

Subject: Re: [Boost-users] BGL: interrupting breadth_first_search() at a certain distance/predicate?
From: Line Blander Reinhardt (lbre_at_[hidden])
Date: 2010-08-03 08:17:44

Eventhough I love filtered graphs I do not see how it would work in your situation assuming that you don't always use the same source vertex (If you do use the same source vertex it will be a good option). 
I would probably make my own breath first search on the boost graph that kept track of the depth and stopped after depth 5-6. 

Best 
   Line

________________________________________
Fra: boost-users-bounces_at_[hidden] [boost-users-bounces_at_[hidden]] På vegne af Anders Wallin [anders.e.e.wallin_at_[hidden]]
Sendt: 2. august 2010 16:46
Til: boost-users
Emne: [Boost-users] BGL: interrupting breadth_first_search() at a certain       distance/predicate?

Hi all,

I have a graph where I start at a certain vertex and want to find the
next undiscovered vertex at a maximum distance of 5 or so from the
source vertex.
Now I am running breadth_first_search() using a record_distances()
visitor and I get the distances to all other vertices (say 10 000 of
them) in my graph. This makes my algorithm slow, since I only need to
know about vertices at a max distance of 5-6, not all of them.
Is there a way of interrupting the algorithm when a certain predicate
function supplied by me evaluates to true? (e.g. max distance reached,
or a new interesting/valid vertex found, etc)

thanks,

AW
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