Re: [Boost-users] Fwd: [Graph] Problem with dynamic_properties

Subject: Re: [Boost-users] Fwd: [Graph] Problem with dynamic_properties
From: Adam Spargo (aws_at_[hidden])
Date: 2010-10-14 05:00:56

Hi,
I can't see the problem straight away, but I had similar problems. Here 
are the examples from the book, fixed to use dp's. You will have to install 
a recent boost version from the trunk, and then change the location in my 
makefile, then it should work.

Hope that helps,

Adam.

--
Dr Adam Spargo
High Performance Assembly Group   email: aws_at_[hidden]
Wellcome Trust Sanger Institute   Tel: [phone] x7728
Hinxton, Cambridge CB10 1SA       Fax: [phone]
On Wed, 13 Oct 2010, fokenrute wrote:
> Hi everybody, I'm new to BGL and very frustrated beacause I can't make a
> proper use of dynamic_properties.I'm just trying to read a graphviz dot
> file with read_graphviz and I found a sample which make use of
> dynamic_properties 
> in order to make a proper call to read_grahviz.
> Here is the slightly modified sample:
> 
> typedef boost::adjacency_list < boost::listS, boost::vecS,
> boost::undirectedS > Graph;
> typedef boost::graph_traits<Graph>::vertex_descriptor Vertex;
> typedef boost::graph_traits<Graph>::vertex_iterator Iterator;
> 
> 
> int main(int argc, char **argv)
> {
>     Graph g;
>     std::ifstream input(argv[1]);
>     boost::dynamic_properties dp;
>     dp.property("node_id", boost::get(boost::vertex_name, g));
>     dp.property("weight", boost::get(boost::edge_weight, g));
>     boost::read_graphviz(input, g, dp, "id");
>     return 0;
> }
> 
> 
> When I try to compile it, g++ returns lots of cryptic template related
> error messages
> but I suspect the most relevant part is : no match for 'operator<<' in
> 'out << boost::get...'
> I must be doing something wrong, but I can't get it; expect you'll point
> me out my mistake
> so that I could re-focus on the algorithms instead of these annoying
> technical details. 
> 
> 
>