Displaying large graphs

[Cherie Pun <cherie.cy.pun AT gmail.com>]

Hi,

I am trying to display a graph with 457555 edges but it shows up as a single dot on my computer. If I limit to 5000 edges, it shows a graph as attached below. Is there a reason why it's doing this? I am using a hashmap to store the edges and the following code to construct the graph. Thank you very much for your help.

private static void displayGraph(HashMap<UserPair, TrustRelation> map) {
    Graph graph = new SingleGraph("Trust");
    graph.setStrict(false);
    graph.setAutoCreate( true );
    graph.addAttribute("ui.stylesheet", STYLE_SHEET);
    for(Map.Entry<UserPair, TrustRelation> entry : map.entrySet()){
        UserPair up = entry.getKey();
        TrustRelation tr = entry.getValue();
        double strengthOfTrust = tr.computeConversationalTrust();
        if (strengthOfTrust > 0) {
            Edge edge = graph.addEdge(up.toString(), Integer.toString(up.getUserA()), Integer.toString(up.getUserB()));
            edge.addAttribute("weight", strengthOfTrust);
            edge.addAttribute("ui.class", "untrustworthy");
            edge.addAttribute("ui.class", "trustworthy");
            edge.setAttribute("ui.color", strengthOfTrust/4.0);
        }

    }

    graph.display();
}

Kind regards,

Cherie