Problem with retrieving Node Position

[Barbaros Özdemir <barbaros.oezdemir AT gmail.com>]

Hi @all,

i tried to retrieve node positions just as suggested on the tutorial page (http://graphstream-project.org/doc/Tutorials/Graph-Visualisation_1.0/#viewers) in chapter 2 under "Retrieving nodes coordinates of the automatic layout". 

I do however get for each node the position "0.0 0.0 0.0", which does not make any sense as the drawn graph looks different. 

I appreciate any feedback/comment on what i am doing wrong. 

Thanks in advance. 

Best regards,

Barbaros Özdemir

PS: Here the code i have executed;

Import org.graphstream.graph *.

Import org.graphstream.graph.implementations *.

Import org.graphstream.ui.view.Viewer;

import static org.graphstream.algorithm.Toolkit *.

 

public class Tutorial1 {

        public static void main (String args []) {

        Graph graph = new Graph Single ("Tutorial 1");

       

        graph.addNode ("A");

        graph.addNode ("B");

        graph.addNode ("C");

        graph.addNode ("D");

        graph.addEdge ("AB", "A", "B");

        graph.addEdge ("AC", "A", "C");

        graph.addEdge ("AD", "A", "D");

        graph.addEdge ("BD", "B", "D");

        graph.addEdge ("BC", "B", "C");

        graph.addEdge ("DC", "D", "C");

               

        for (Node n: graph) {

        String nodeId = n.getId ();

        Node node = graph.getNode (nodeId);

        Double pos [] = nodePosition (node);

        System.out.print (n.getId () + "");

        for (int i = 0; i <pos.length; i ++) {

        System.out.print (pos [i] + "");

        }

        System.out.println ("");

        }

       

        Viewer viewer = graph.display ();

        viewer.enableAutoLayout ();

        }

}

PPS: And here the output (the graph is in attachment): 

A: 0.0 0.0 0.0 

B: 0.0 0.0 0.0 

C: 0.0 0.0 0.0 

D: 0.0 0.0 0.0 

Attachment: Screenshot from 2015-08-11 16:32:37.png
Description: PNG image