UnionSet bug?

• To: "Visad List" <visad-list@xxxxxxxxxxxxx>
• Subject: UnionSet bug?
• From: "Jakob Svensson" <pjds@xxxxxxxxxx>
• Date: Fri, 7 Dec 2001 12:45:44 +0100

Dear All,

Can UnionSet only accept unions of Linear2DSets with equal number of
elements in each direction, or have I done something wrong? The code below
works fine for

        noPoints = 10

but fails for example for

        noPoints = 11



import visad.*;
import visad.java2d.DisplayImplJ2D;
import java.rmi.RemoteException;
import javax.swing.*;
import java.awt.event.*;


public class Main {

  public static void main(String[] args) throws VisADException,
RemoteException {
    Main main = new Main();
    main.run();
  }

  void run() throws VisADException, RemoteException {
    RealType x = new RealType("x");
    RealType y = new RealType("y");
    RealTupleType xy = new RealTupleType(x,y);
    RealType z = new RealType("z");
    DataReferenceImpl ref = new DataReferenceImpl("ref");
    DisplayImplJ2D display = new DisplayImplJ2D("display");

    int noPoints = 11;
    Linear2DSet domain1 = new Linear2DSet(xy,1.0,10.0,10,20.0,30.0,10);
    Linear2DSet domain2 = new Linear2DSet(xy,20.0,40.0,noPoints,
50.0,60.0,10);
    UnionSet union = new UnionSet(xy,new SampledSet[] { domain1, domain2 });
    FlatField f = new FlatField(new FunctionType(xy,z), union);
    int noSamples = 10*10+noPoints*10;

    double[][] samples = new double[1][noSamples];

    for(int i=0;i<noSamples;++i) {
      samples[0][i] = (double) i*i;
    }

    f.setSamples(samples);

    ref.setData(f);
    display.addMap(new ScalarMap(x,Display.XAxis));
    display.addMap(new ScalarMap(y,Display.YAxis));
    display.addMap(new ScalarMap(z,Display.RGB));
    display.addReference(ref);

    JFrame frame =  new JFrame("VisAD Test");
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {System.exit(0);}
    });
    frame.setSize(300,300);
    frame.getContentPane().add(display.getComponent());
    frame.show();
  }
}



This produces:

java.lang.ArrayIndexOutOfBoundsException        at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:955)     at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:507)     at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:507)     at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:496)     at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:507)     at
visad.java2d.VisADCanvasJ2D.render(VisADCanvasJ2D.java:507)     at
visad.java2d.VisADCanvasJ2D.paintComponent(VisADCanvasJ2D.java:392)     at
visad.java2d.VisADCanvasJ2D.run(VisADCanvasJ2D.java:317)        at
java.lang.Thread.run(Thread.java:484)




Regards,
Jakob


----------------------------------------------------------
Dr Jakob Svensson, Max Planck Institute for Plasma Physics
Boltzmannstrasse 2, D-85748 Garching, Germany
Tel +49-(0)89-32991786