salut,
j'utilise Jfreechart pour obtenir des courbes,
Comment je peut modifier mon code pour avoir un "LINE CHART" avec un axe pour chaque série(variable) car chaque série varie dans une plage de valeur différente des autres
voici mon code
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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package multiple;
 
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
//import java.text.DecimalFormat;
 
public class LineChartTests extends ApplicationFrame {
	public LineChartTests(String title) {
	super(title);
		CategoryDataset dataset = createDataset();
			JFreeChart chart = createChart(dataset);
			// add the chart to a panel...
			ChartPanel chartPanel = new ChartPanel(chart);
			chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
			setContentPane(chartPanel);
	}
	private String url= "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=C:/pfe.mdb";
	private String user = "user";
	private String pass = "pass";
	private String []temps = new String [100];
	private float[] Traf= new float [100];
	private float[] SRVLINES= new float [100];
	private float[] CULC= new float [100];
	private int y=0;
 
	private CategoryDataset createDataset() {
		// row keys...
		String series1 = "TGRP:TRAFCARR";
		String series2 = "TGRP:SRVLINES";
		String series3 = "TGRP:CULC";
 
//		--connection à la base donnée
		try {
			Class.forName("sun.jdbc.odbc.JdbcOdbcDriver") ;
			}
			catch(ClassNotFoundException e) {
			System.err.println("Erreur de chargement du driver : + e") ;
			}
			try {
				Connection connect = DriverManager.getConnection(url,user,pass) ;
				Statement statement = connect.createStatement() ;
				String Str="2007/05/20";
				String Str02="MSC09:TBTN16";
 
 
 
	       		String query = "select \"TGRP:TRAFCARR\",\"TGRP:SRVLINES\",\"TGRP:CULC\",Time from TGRPDetailed where (Date=\'"+Str+"\' and Object=\'"+Str02+"\') ";		       		
	       		//String query = "select \"TGRP:TRAFCARR\",Time from TGRPDetailed where (Date=\'"+Str+"\' and Object=\'"+Str02+"\') ";
	       		ResultSet resultset = statement.executeQuery(query);				
				while (resultset.next()!= false){				 	
					 String Str1 = resultset.getString(1);
					 String Str2 = resultset.getString(2);
					 String Str3 = resultset.getString(3);
					 String Str4 = resultset.getString(4);
					 Traf[y]= Float.parseFloat(Str1);
					 SRVLINES[y]= Float.parseFloat(Str2);
					 CULC[y]= Float.parseFloat(Str3);
					 temps[y]=Str4;
					 y++;
						} 	
				System.out.println(y);
			connect.close();// fermuture de la connection à la BD
				}
			catch(SQLException sqle) {
			System.err.println("Erreur lors de la connexion : " + sqle) ;
			}
 
		//column keys...
 
 
		//String type1 = "Type 1";
		//String type2 = "Type 2";
		//String type3 = "Type 3";
		//String type4 = "Type 4";
		//String type5 = "Type 5";
		//String type6 = "Type 6";
		//String type7 = "Type 7";
		//String type8 = "Type 8";
 
		// create the dataset...
 
 
 
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		for (int i=0;i<y;i++){
			dataset.addValue(Traf[i], series1, temps[i]);
			dataset.addValue(SRVLINES[i], series2, temps[i]);
			dataset.addValue(CULC[i], series3, temps[i]);
		}
 
		//dataset.addValue(5.0, series2, type1);
		/*
		dataset.addValue(7.0, series2, type2);
		dataset.addValue(6.0, series2, type3);
		dataset.addValue(8.0, series2, type4);
		dataset.addValue(4.0, series2, type5);
		dataset.addValue(4.0, series2, type6);
		dataset.addValue(2.0, series2, type7);
		dataset.addValue(1.0, series2, type8);
		dataset.addValue(4.0, series3, type1);
		dataset.addValue(3.0, series3, type2);
		dataset.addValue(2.0, series3, type3);
		dataset.addValue(3.0, series3, type4);
		dataset.addValue(6.0, series3, type5);
		dataset.addValue(3.0, series3, type6);
		dataset.addValue(4.0, series3, type7);
		dataset.addValue(3.0, series3, type8);
		*/
		return dataset;
	}
	private JFreeChart createChart(CategoryDataset dataset) {
		// create the chart...
		JFreeChart chart = ChartFactory.createLineChart(
				"Line Chart Demo 1", // chart title
				"Type", // domain axis label
				"Value", // range axis label
				dataset, // data
				PlotOrientation.VERTICAL, // orientation
				true, // include legend
				true, // tooltips
				false // urls
		);
		/*
		// NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
		StandardLegend legend = (StandardLegend) chart.getLegend();
		legend.setDisplaySeriesShapes(true);
		legend.setDisplaySeriesLines(true);
		chart.setBackgroundPaint(new Color(0xCC, 0xCC, 0xFF));
		CategoryPlot plot = chart.getCategoryPlot();
		// customise the range axis...
		NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
		rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
		rangeAxis.setAutoRangeIncludesZero(true);
		rangeAxis.setUpperMargin(0.20);
		rangeAxis.setLabelAngle(Math.PI / 2.0);
		//customise the renderer...
		LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
		renderer.setDrawOutlines(true);
		renderer.setSeriesStroke(0, new BasicStroke(2.0f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND,
				1.0f,new float[] {10.0f, 6.0f},0.0f));
		renderer.setSeriesStroke(1, new BasicStroke(2.0f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND,
				1.0f,new float[] {6.0f, 6.0f},0.0f));
		renderer.setSeriesStroke(2, new BasicStroke(2.0f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND,
				1.0f,new float[] {2.0f, 6.0f},0.0f));
		renderer.setItemLabelsVisible(true);
		renderer.setPositiveItemLabelPosition(new ItemLabelPosition());
		renderer.setNegativeItemLabelPosition(new ItemLabelPosition());
		// OPTIONAL CUSTOMISATION COMPLETED.
		 * 
		 */
		return chart;
	}
	public static void main(String[] args) {
		LineChartTests demo = new LineChartTests("Line Chart Demo");
		demo.pack();
		RefineryUtilities.centerFrameOnScreen(demo);
		demo.setVisible(true);
	}
}