charts

Si tu parles de jCharts, j'ai eu le même problème au début...

Alors, même si c'est pas un code 100% parfait, voici une façon de tracer un graphique pour qu'il se repeigne quand il le faut :

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
// SwingDemo.java  
 
import org.jCharts.axisChart.*;
import org.jCharts.test.*;
import org.jCharts.types.*;
import org.jCharts.chartData.*;
import org.jCharts.nonAxisChart.*;
import org.jCharts.properties.*;
 
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class SwingDemo extends JFrame
{
private MonPanel panel;
 
//*******************************************************************************
public SwingDemo() throws ChartDataException, PropertyException
  {
  initComponents();
  }
//********************************************************************************/
private void initComponents() throws ChartDataException, PropertyException
  {
  setTitle("Test Swing et JCharts");
  setSize( 600, 400 );
  MonPanel panel=new MonPanel();
  panel.setSize( 600, 400 );
  panel.construireUnAxisChart();
 
  getContentPane().add( panel, BorderLayout.CENTER );
  setVisible( true );
 
  addWindowListener( new WindowAdapter()
           {
           public void windowClosing( WindowEvent e )
              {
              System.exit( 0 );
              }
           }
        );
  }
 
//***********************************************************
  public static void main( String args[] ) throws ChartDataException, PropertyException
  {
  // En tout premier, on place le LookAndFeel
  try {
      UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
      }
  catch (Exception e)
      {
      System.out.println(e.toString());
      }
 
  new SwingDemo();
  }
}

et aussi

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
import org.jCharts.axisChart.*;
import org.jCharts.test.*;
import org.jCharts.types.*;
import org.jCharts.chartData.*;
import org.jCharts.nonAxisChart.*;
import org.jCharts.properties.*;
 
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class MonPanel extends JPanel
{
// CHAMPS
AxisChart axisChart;
 
// Constructeur :
public MonPanel()
  {
  super(true);
  setBackground(Color.black);
  }
//**********************************************************************
public void construireUnAxisChart() throws ChartDataException, PropertyException
  {
  // -----------------------------------------------------------------------------
  String[] xAxisLabels= { "A", "B", "C", "D", "E", "F", "G", "H", "I" };
  String xAxisTitle= "Temps";
  String yAxisTitle= "Rendement";
  String title=      "Joli graphe";
  DataSeries dataSeries = new DataSeries( xAxisLabels, xAxisTitle, yAxisTitle, title );
 
 
  double[][] data= new double[][]{ { 250,  45, 136,  66, 145,  80, 55, 34, 98 }, 
                                   {  50, 145,   6, 166, 105, 105, 85, 78, 80 } };
  String[] legendLabels= { "Bugs", "FUD Towards Gnu/Linux" };
  Paint[] paints= new Paint[] { new Color( 255,  0, 18 ,100 ),  //new Color( 153, 0, 255 ,100 ), 
                                new Color( 255,138,  0, 150 ) };//new Color( 204,0,255, 150 ) };
 
  AreaChartProperties areaChartProperties= new AreaChartProperties();
  AxisChartDataSet axisChartDataSet= new AxisChartDataSet( data, legendLabels, 
                                                         paints, ChartType.AREA, 
                                                         areaChartProperties );
 
  dataSeries.addIAxisPlotDataSet( axisChartDataSet );
 
  ChartProperties  chartProperties  = new ChartProperties();
  AxisProperties   axisProperties   = new AxisProperties();
  LegendProperties legendProperties = new LegendProperties();
 
  axisChart= new AxisChart( dataSeries, chartProperties, 
                                    axisProperties, legendProperties,
                                    500, 350 );
 
  Graphics   g  = this.getGraphics();
  Graphics2D g2 = (Graphics2D) g;
 
  axisChart.setGraphics2D( g2) ;
  }
//**********************************************************************
public void paintComponent(Graphics g)
  {
  super.paintComponent(g);
  Graphics2D g2 = (Graphics2D) g;
 
  axisChart.setGraphics2D( g2) ;
  try {
      axisChart.render();
      }
  catch (ChartDataException cde)
     {
     System.out.println( cde.toString() );
     }
  catch (PropertyException pe)
     {
     System.out.println( pe.toString() );
     }
  }
//**********************************************************************
}

En espérant que cela te serve...
;-)