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NumberAxis numberAxis = (NumberAxis) plot.getRangeAxis();
numberAxis .setAutoTickUnitSelection(false);
double unit=10d;//刻度的长度
NumberTickUnit ntu= new NumberTickUnit(unit);
numberAxis .setTickUnit(ntu);
DateAxis xAxis = new DateAxis(xName);
xAxis.setRange(start_time, end_time);
xAxis.setAutoTickUnitSelection(false);
xAxis.setTickUnit(new DateTickUnit(DateTickUnit.MINUTE,20));
plot.setDomainAxis(xAxis);
package demo;
import java.awt.Color;
import java.awt.Dimension;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;
public class LineChartDemo2 extends ApplicationFrame
{
public LineChartDemo2(String paramString)
{
super(paramString);
XYDataset localXYDataset = createDataset();
JFreeChart localJFreeChart = createChart(localXYDataset);
ChartPanel localChartPanel = new ChartPanel(localJFreeChart);
localChartPanel.setPreferredSize(new Dimension(500, 270));
setContentPane(localChartPanel);
}
private static XYDataset createDataset()
{
XYSeries localXYSeries1 = new XYSeries("First");
localXYSeries1.add(1.0D, 1.0D);
localXYSeries1.add(2.0D, 4.0D);
localXYSeries1.add(3.0D, 3.0D);
localXYSeries1.add(4.0D, 5.0D);
localXYSeries1.add(5.0D, 5.0D);
localXYSeries1.add(6.0D, 7.0D);
localXYSeries1.add(7.0D, 7.0D);
localXYSeries1.add(8.0D, 8.0D);
XYSeries localXYSeries2 = new XYSeries("Second");
localXYSeries2.add(1.0D, 5.0D);
localXYSeries2.add(2.0D, 7.0D);
localXYSeries2.add(3.0D, 6.0D);
localXYSeries2.add(4.0D, 8.0D);
localXYSeries2.add(5.0D, 4.0D);
localXYSeries2.add(6.0D, 4.0D);
localXYSeries2.add(7.0D, 2.0D);
localXYSeries2.add(8.0D, 1.0D);
XYSeries localXYSeries3 = new XYSeries("Third");
localXYSeries3.add(3.0D, 4.0D);
localXYSeries3.add(4.0D, 3.0D);
localXYSeries3.add(5.0D, 2.0D);
localXYSeries3.add(6.0D, 3.0D);
localXYSeries3.add(7.0D, 6.0D);
localXYSeries3.add(8.0D, 3.0D);
localXYSeries3.add(9.0D, 4.0D);
localXYSeries3.add(10.0D, 3.0D);
XYSeriesCollection localXYSeriesCollection = new XYSeriesCollection();
localXYSeriesCollection.addSeries(localXYSeries1);
localXYSeriesCollection.addSeries(localXYSeries2);
localXYSeriesCollection.addSeries(localXYSeries3);
return localXYSeriesCollection;
}
private static JFreeChart createChart(XYDataset paramXYDataset)
{
JFreeChart localJFreeChart = ChartFactory.createXYLineChart("Line Chart Demo 2", "X", "Y", paramXYDataset, PlotOrientation.VERTICAL, true, true, false);
localJFreeChart.setBackgroundPaint(Color.white);
XYPlot localXYPlot = (XYPlot)localJFreeChart.getPlot();
localXYPlot.setBackgroundPaint(Color.lightGray);
localXYPlot.setAxisOffset(new RectangleInsets(5.0D, 5.0D, 5.0D, 5.0D));
localXYPlot.setDomainGridlinePaint(Color.white);
localXYPlot.setRangeGridlinePaint(Color.white);
XYLineAndShapeRenderer localXYLineAndShapeRenderer = (XYLineAndShapeRenderer)localXYPlot.getRenderer();
localXYLineAndShapeRenderer.setBaseShapesVisible(true);
localXYLineAndShapeRenderer.setBaseShapesFilled(true);
NumberAxis localNumberAxis = (NumberAxis)localXYPlot.getRangeAxis();
localNumberAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
return localJFreeChart;
}
public static JPanel createDemoPanel()
{
JFreeChart localJFreeChart = createChart(createDataset());
return new ChartPanel(localJFreeChart);
}
public static void main(String[] paramArrayOfString)
{
LineChartDemo2 localLineChartDemo2 = new LineChartDemo2("Line Chart Demo 2");
localLineChartDemo2.pack();
RefineryUtilities.centerFrameOnScreen(localLineChartDemo2);
localLineChartDemo2.setVisible(true);
}
}