// ChangeMarker:

    // A graph's display properties (marker symbol, axis characteristics, and
    // so on) are general properties that are defined in the graph's model. The
    // marker characteristics are defined as MarkerStyles that are applied to
    // the plot's DataElementStyles. Thus, the change the markers,
    //    1) Get the LinePlot's graph model
    //    2) Disable interpolation and enable marker display
    //    3) Define a MarkerStyle for the plot markers
    //    4) Set the MarkerStyle on the model's DataElementStyles

       import com.sas.graphics.components.lineplot.LinePlot;
       import com.sas.graphics.components.lineplot.LinePlotModel;
       import com.sas.graphics.components.MarkerStyle;
       import com.sas.graphics.components.lineplot.LinePlotTableDataModel;
       import com.sas.graphics.components.PlotVariable;
       import java.awt.BorderLayout;
       import java.awt.Color;
       import java.awt.Container;
       import java.awt.event.WindowAdapter;
       import java.awt.event.WindowEvent;
       import javax.swing.JFrame;
       import javax.swing.JPanel;
       import javax.swing.table.DefaultTableModel;

       public class ChangeMarker extends JPanel  {
         private ChangeMarker  theApp;
         public ChangeMarker () {
            setLayout(new BorderLayout());

         // Create a LinePlot and a data source
            LinePlot linePlot=new LinePlot();
            SampleData dataTable=new SampleData();

         // 1) Get the LinePlot's graph model
            LinePlotModel gModel=linePlot.getGraphModel();

         // 2) Disable interpolation and enable marker display
               gModel.setInterpolationEnabled(false);
               gModel.setMarkerEnabled(true);

         // 3) Define a MarkerStyle for the plot markers
            MarkerStyle[] markerStyle=new MarkerStyle[] {
                      new MarkerStyle(MarkerStyle.SYMBOL_SQUARE_FILLED)};

         // 4) Set the MarkerStyle on the model's DataElementStyles
            gModel.getDataElementStyles().setMarkerStyles(markerStyle);

         // Create a data model and attach the data source
            LinePlotTableDataModel dataModel=
                      new LinePlotTableDataModel();
            dataModel.setModel(dataTable);

         // Assign the X and Y variable roles
            dataModel.setXVariable(
                      new PlotVariable("x2"));
            dataModel.setYVariable(
                      new PlotVariable("y2"));

         // Assign the data model to the LinePlot
            linePlot.setDataModel(dataModel);

         // Set a graph title
            linePlot.getTitle1().setText(
                     "Change Plot Markers");

            add(linePlot, BorderLayout.CENTER);
          }
      // Create the data source
         static private class SampleData extends DefaultTableModel {
           private static Class  columnClass[]={ Double.class
                                                , Double.class
                                                , Double.class
                                                , Double.class
                                                , Double.class
                                                , Double.class
                                                };

            private static String columnNames[]={ "x1"
                                                , "x2"
                                                , "x3"
                                                , "y1"
                                                , "y2"
                                                , "y3"
                                                };

    	    public SampleData()
    	    {
    	        super();
                Object data[][]={
                                  {new Double( 10),new Double( 20), new Double( 30), new Double(  3),new Double(  5), new Double(  25)}
                                , {new Double( 20),new Double( 30), new Double( 40), new Double(  6),new Double(  10), new Double(  30)}
                                , {new Double( 30),new Double( 40), new Double( 50), new Double(  9),new Double(  15), new Double(  35)}
                                , {new Double( 40),new Double( 50), new Double( 60), new Double(  12),new Double(  20), new Double(  40)}
                                , {new Double( 50),new Double( 60), new Double( 70), new Double(  15),new Double(  25), new Double(  50)}
                                , {new Double( 70),new Double( 80), new Double( 90), new Double(  18),new Double( 20), new Double(  55)}
                                , {new Double( 80),new Double( 90), new Double( 100), new Double(  21),new Double(  15), new Double(  60)}
                                , {new Double( 90),new Double( 100), new Double( 110), new Double(  24),new Double(  10), new Double(  65)}
                                , {new Double( 100),new Double( 110), new Double( 120), new Double(  27),new Double(  5), new Double(  70)}
                                };
                setDataVector(data, columnNames);
    	    }

    	    public Class getColumnClass(int column)
    	    {
    	    	return columnClass[column];
    	    }
            }
          public static void main(String[] args) {
          	  JFrame frame = new JFrame("BIP Graph Sample");
          	  Container container = frame.getContentPane();
              container.setLayout(new BorderLayout());
              container.setBackground(Color.white);

              JPanel bipPanel = new JPanel();
              bipPanel.setLayout(new BorderLayout());
              ChangeMarker  bipGraphSample = new ChangeMarker ();

              bipPanel.add(bipGraphSample, BorderLayout.CENTER);
              container.add(bipPanel, BorderLayout.CENTER);

              frame.setSize(600,450);
              frame.addWindowListener(new WindowAdapter() {
                  public void windowClosing(WindowEvent e) {
                         System.exit(0);
                  }
              } );
              frame.setVisible(true);
          }
       }