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# VisualizeGraph

VTKEx/Java/Graphs/VisualizeGraph

### Description

This example shows how to construct a graph and visualize it using vtkMutableUndirectedGraph which is an undirected graph with additional functions for adding vertices and edges You can select edges and vertices with the mouse.

Other languages

See (Cxx), (Python)

Question

If you have a simple question about this example contact us at VTKExProject If your question is more complex and may require extended discussion, please use the VTK Discourse Forum

### Code

VisualizeGraph.java

    import vtk.vtkNativeLibrary;
    import vtk.vtkGraphLayoutView;
    import vtk.vtkMutableUndirectedGraph;
    import vtk.vtkSimple2DLayoutStrategy;

    public class VisualizeGraph
    {

      //-----------------------------------------------------------------
      // Load VTK library and print which library was not properly loaded
      static
      {
        if (!vtkNativeLibrary.LoadAllNativeLibraries())
        {
          for (vtkNativeLibrary lib : vtkNativeLibrary.values())
          {
            if (!lib.IsLoaded())
            {
              System.out.println(lib.GetLibraryName() + " not loaded");
            }
          }
        }
          vtkNativeLibrary.DisableOutputWindow(null);
      }
      // -----------------------------------------------------------------

      public static void main(String args[])
      {

        vtkMutableUndirectedGraph G = new vtkMutableUndirectedGraph();
        int v1 = G.AddVertex();
        int v2 = G.AddVertex();

        G.AddGraphEdge(v1, v2);
        G.AddGraphEdge(v1, v2);

        vtkGraphLayoutView GraphLayoutView = new vtkGraphLayoutView();
        GraphLayoutView.AddRepresentationFromInput(G);
        GraphLayoutView.SetLayoutStrategy("Simple 2D");
        GraphLayoutView.ResetCamera();
        GraphLayoutView.Render();

        vtkSimple2DLayoutStrategy Simple2DLayoutStrategy = new vtkSimple2DLayoutStrategy();
        Simple2DLayoutStrategy.SetRandomSeed(0);
        GraphLayoutView.GetLayoutStrategy();
        GraphLayoutView.GetInteractor().Start();

      }

    }