Re: [Boost-users] Trouble w/ fruchterman-reingold

Subject: Re: [Boost-users] Trouble w/ fruchterman-reingold
From: eric (eric.burns_at_[hidden])
Date: 2012-10-05 11:12:46

I changed it to:

        property_map<graph_traits&lt;Graph>::vertex_descriptor,
Topology::point_type> positionMap;
        minstd_rand gen;
        Topology rect_top(gen, -25, -25, 25, 25);
        random_graph_layout(graph, positionMap, rect_top);

so that it would conform w/ the description  here
<http://www.boost.org/doc/libs/1_51_0/libs/graph/doc/random_layout.html>  
that says:

IN/OUT: PositionMap position
The property map that stores the position of each vertex. The type
PositionMap must be a model of Lvalue Property Map such that the vertex
descriptor type of Graph is convertible to its key type. Its value type must
be Topology::point_type, representing the coordinates of the vertex.

Now I get the error message:

1>c:\program files (x86)\boost\boost_1_51\boost\graph\properties.hpp(222) :
error C2039: 'type' : is not a member of 'boost::vertex_property_type<G>'
1>        with
1>        [
1>            G=unsigned int
1>        ]
1>        c:\program files
(x86)\boost\boost_1_51\boost\graph\properties.hpp(233) : see reference to
class template instantiation
'boost::detail::vertex_property_map<Graph,PropertyTag>' being compiled
1>        with
1>        [
1>            Graph=unsigned int,
1>            PropertyTag=boost::rectangle_topology<>::point_type
1>        ]

I think what I really need is a comprehensible example.  All that I've found
in the way of an example is  here
<http://www.boost.org/doc/libs/1_42_0/libs/graph/test/layout_test.cpp>  . 
But it contains so much Boost-specific jargony things that it's not really
good for a beginner to look at and get the sense of how things work.

Do you have any such examples up your sleeve?  

--
View this message in context: http://boost.2283326.n4.nabble.com/Trouble-w-fruchterman-reingold-tp4636494p4636601.html
Sent from the Boost - Users mailing list archive at Nabble.com.