Graph *graph = wantFullGraph? rootGraph : subGraph; MyPropertyMap mymap = get(my_type_t(), *graph); for( v in all vertices in *graph) { mymap[v] = blah; } That is, after reading the docs my understanding is that if I pick up a

Hi, A couple of (newbie) questions on subgraphs and property maps: 1. I tried to re-run the example posted at http://lists.boost.org/MailArchives/boost-users/msg05889.php and I get a segfault whilst trying to assign name1[B1] - according to a follow-up message (http://lists.boost.org/MailArchives/boost-users/msg05891.php), that code snippet was supposed to be working fine. Am I doing something wrong? 2. Maybe it's another symptom of the same problem, but I am seeing runtime failures (invalid pointers) when I write code such as: property map from a (sub)graph, I can use the vertices in that (sub)graph to address into that map - everything should work fine provided that I am consistently using the same (sub)graph. Is this understanding correct? If so, I'm puzzled - the only way I can get this to work is to do:

Graph *graph = wantFullGraph? rootGraph : subGraph; MyPropertyMap mymap = get(my_type_t(), *rootGraph); for( v in all vertices in *graph) { v1 = graph->local_to_global(v) mymap[v1] = blah; }

I am using - gcc version 3.3.4 (pre 3.3.5 20040809) - Linux myhost 2.6.8-24.10-default #1 Wed Dec 22 11:54:27 UTC 2004 i686 i686 i386 GNU/Linux Can someone enlighten me. please? Thanks, Andrea