RandomGraphSource

vtk-examples/Java/Graphs/RandomGraphSource

Description¶

RandomGraphSource object generates a graph with a specified number of vertices, with the density of edges specified by either an exact number of edges or the probability of an edge.

You may additionally specify whether to begin with a random tree (which enforces graph connectivity).

Other languages

See (Cxx), (Python)

Question

If you have a question about this example, please use the VTK Discourse Forum

Code¶

RandomGraphSource.java

import vtk.vtkNativeLibrary;
import vtk.vtkRandomGraphSource;
import vtk.vtkGraphLayoutView;

public class RandomGraphSource 
{
  // -----------------------------------------------------------------
  // 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[]) 
  {

    vtkRandomGraphSource randomGraphSource =  new vtkRandomGraphSource();
    randomGraphSource.SetNumberOfVertices(5);
    randomGraphSource.SetNumberOfEdges(4);
    randomGraphSource.SetSeed(1); // This ensures repeatable results for testing. Turn this off for real use.
    randomGraphSource.Update();

    vtkGraphLayoutView graphLayoutView = new vtkGraphLayoutView();
    graphLayoutView.AddRepresentationFromInput(randomGraphSource.GetOutput());
    graphLayoutView.ResetCamera();
    graphLayoutView.Render();
    graphLayoutView.GetInteractor().Start();

  }
}