hi Andrew,<br><br><div class="gmail_quote">On Wed, Mar 25, 2009 at 6:53 AM, Andrew Sutton <span dir="ltr"><<a href="mailto:andrew.n.sutton@gmail.com">andrew.n.sutton@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="gmail_quote"><div><br><br></div><div class="im"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">my Graph is :<br><i>typedef boost::adjacency_list<boost::listS,boost::listS,boost::bidirectionalS, EdgeProperties *> Graph;<br>
</i></blockquote></div></div></div></blockquote></div><div><br>Your graph doesn't seem to have edge properties. The EdgeProprties* type appears to be substituted for the VertexProperties parameter, not EdgeProperties.</div>
</div></blockquote><div><br>Sorry for the typo,<br>The actual declaration was� <br><br><i>typedef boost::adjacency_list<boost::listS,boost::listS,boost::bidirectionalS, NodeProperties*, EdgeProperties *> Graph;<br></i><i></i><i><br>
class Node{<br>
� public:<br>
� string id;<br>
};<br>class EdgeProperties { <br>��� public:<br>��� int targetI;// Terminal No. interms of target node<br>��� int sourceI;// Terminal No. interms of source node <br>
��� EdgeProperties(int s,int t):sourceI(s-1),targetI(t-1) { }<br>};<br><br>Graph g;<br>typedef graphtraits<Graph>::vertex_descriptor Vertex;<br>for(boost::tie(iedge_s,iedge_</i>
<i>end) = boost::in_edges(v,g); iedge_s!=iedge_end; ++iedge_s)<br>{<br>��� Vertex src =� boost::source(*iedge_s,g); � <br>
��� Vertex target =� boost::target(*iedge_s,g);<br>�� cout << g[src]->id << "-->" << g[target]->id << endl;<br>��� EdgeProperties *ep = g[*iedge_s];���� //� <==== <b>Line 10;� g[*iedge_s] is returning null</b><br>
��� cout << ep->sourceI << endl;�������� //������� <====�� <b>This is giving segmentation fault;</b><br>}<br></i><i><br></i>**here g[*iedge_s] is returning null**<br>is it the problem because iam using (*iedge_s) as (edge_descriptor) or <br>
the problem somewhere in my code where in i had not properly assigned the property object<br>to that specific edge. <br><br>i just wanted to know whether both of these are same<br><i>graphtraits<Graph>::in_edge_iterator *iedge_iter;<br>
graphtraits<Graph>::edge_iterator *edge_iter;<br></i><i>(*edge_iter)</i> -> this becomes edge_descriptor<br><i>(*iedge_iter) -> </i>**whether this will also become edge_descriptor**� � <br><br>pardon me if iam really missing any basic concept in here.<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="gmail_quote"><div><br>
�</div></div>Andrew Sutton<br><a href="mailto:andrew.n.sutton@gmail.com" target="_blank">andrew.n.sutton@gmail.com</a><br>
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