选择要显示的一系列数据 [英] Choose the series of data that you want to display

问题描述

我有一系列包含多个数据系列的图表：

我希望能够选择我想要显示的系列。例如，只有 0°和 20°。有没有一种简单的方法可以通过操作图表而不使用 JCheckBox 来实现这一点？我希望能够这样做，例如，点击系列的图例。

解决方案

如图所示

  import java.awt.Dimension; 
 import java.awt.EventQueue; 
 import javax.swing.JFrame; 
 import org.jfree.chart.ChartMouseEvent; 
 import org.jfree.chart.ChartMouseListener; 
 import org.jfree.chart.ChartPanel; 
 import org.jfree.chart.JFreeChart; 
 import org.jfree.chart.axis.NumberAxis; 
 import org.jfree.chart.entity.ChartEntity; 
 import org.jfree.chart.entity.LegendItemEntity; 
 import org.jfree.chart.entity.XYItemEntity; 
 import org.jfree.chart.labels.StandardXYToolTipGenerator; 
 import org.jfree.chart.plot.PlotOrientation; 
 import org.jfree.chart.plot.XYPlot; 
 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; 
 import org.jfree.data.xy.XYSeries; 
 import org.jfree.data.xy.XYSeriesCollection; 
 
 / ** @see https://stackoverflow.com/a/43286042/230513 * / 
公共类VisibleTest {
 
 private void display（）{ 
 JFrame f = new JFrame（Test）; 
 f.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 
 XYSeriesCollection dataset = new XYSeriesCollection（）; 
 for（int i = 0; i< 3; i ++）{
 XYSeries series = new XYSeries（value+ i）; 
 for（double t = 0; t< 2 * Math.PI; t + = 0.5）{
 series.add（t，Math.sin（t）+ i）; 
} 
 dataset.addSeries（系列）; 
} 
 NumberAxis xAxis = new NumberAxis（domain）; 
 NumberAxis yAxis = new NumberAxis（range）; 
 XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer（true，true）; 
 renderer.setBaseToolTipGenerator（new StandardXYToolTipGenerator（））; 
 XYPlot plot = new XYPlot（dataset，xAxis，yAxis，renderer）; 
 JFreeChart chart = new JFreeChart（Test，plot）; 
 ChartPanel chartPanel = new ChartPanel（图表）{
 @Override 
 public Dimension getPreferredSize（）{
 return new Dimension（640,480）; 
} 
}; 
 chartPanel.addChartMouseListener（new ChartMouseListener（）{
 @Override 
 public void chartMouseClicked（ChartMouseEvent e）{
 ChartEntity ce = e.getEntity（）; 
 if（b） ce instanceof XYItemEntity）{
 XYItemEntity item =（XYItemEntity）ce; 
 renderer.setSeriesVisible（item.getSeriesIndex（），false）; 
} else if（ce instanceof LegendItemEntity）{
 LegendItemEntity item =（LegendItemEntity）ce; 
 Comparable key = item.getSeriesKey（）; 
 renderer.setSeriesVisible（dataset.getSeriesIndex（key），false）; 
} else {
 for（int i = 0; i< dataset.getSeriesCount（）; i ++）{
 renderer.setSeriesVisible（i，true）; 
} 
} 
} 
 
 @Override 
 public void chartMouseMoved（ChartMouseEvent e）{} 
}）; 
 
 f.add（chartPanel）; 
 f.pack（）; 
 f.setLocationRelativeTo（null）; 
 f.setVisible（true）; 
} 
 
 public static void main（String [] args）{
 EventQueue.invokeLater（new VisibleTest（）:: display）; 
} 
} 
  

I have a plot with multiple series of data:

I want to be able to pick the series that I want to display. For example, only the 0° and 20° ones. Is there a simple way to do this by manipulating the chart without using JCheckBox? I want to be able to do this, for example, by clicking on the legend of the series.

解决方案

As shown here, JCheckBox is more flexible, but clicking directly on the chart may be more convenient. The example below adds a ChartMouseListener that makes a series invisible when clicking on either an XYItemEntity in the series or its LegendItemEntity. Of course, once a series is invisible, it cannot be clicked on again; you'll need a way to restore visibility. Among some alternatives, the first is illustrated below:

• Restore the visibility of all series when clicking elsewhere on the chart.

• Combine this with the approach cited above, toggling the JCheckBox accordingly in your implementation of chartMouseClicked().

• Loop through the series in a button handler, restoring the visibility of each.

import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JFrame;
import org.jfree.chart.ChartMouseEvent;
import org.jfree.chart.ChartMouseListener;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.LegendItemEntity;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.chart.labels.StandardXYToolTipGenerator;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/** @see https://stackoverflow.com/a/43286042/230513 */
public class VisibleTest {

    private void display() {
        JFrame f = new JFrame("Test");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        XYSeriesCollection dataset = new XYSeriesCollection();
        for (int i = 0; i < 3; i++) {
            XYSeries series = new XYSeries("value" + i);
            for (double t = 0; t < 2 * Math.PI; t += 0.5) {
                series.add(t, Math.sin(t) + i);
            }
            dataset.addSeries(series);
        }
        NumberAxis xAxis = new NumberAxis("domain");
        NumberAxis yAxis = new NumberAxis("range");
        XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(true, true);
        renderer.setBaseToolTipGenerator(new StandardXYToolTipGenerator());
        XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
        JFreeChart chart = new JFreeChart("Test", plot);
        ChartPanel chartPanel = new ChartPanel(chart) {
            @Override
            public Dimension getPreferredSize() {
                return new Dimension(640, 480);
            }
        };
        chartPanel.addChartMouseListener(new ChartMouseListener() {
            @Override
            public void chartMouseClicked(ChartMouseEvent e) {
                ChartEntity ce = e.getEntity();
                if (ce instanceof XYItemEntity) {
                    XYItemEntity item = (XYItemEntity) ce;
                    renderer.setSeriesVisible(item.getSeriesIndex(), false);
                } else if (ce instanceof LegendItemEntity) {
                    LegendItemEntity item = (LegendItemEntity) ce;
                    Comparable key = item.getSeriesKey();
                    renderer.setSeriesVisible(dataset.getSeriesIndex(key), false);
                } else {
                    for (int i = 0; i < dataset.getSeriesCount(); i++) {
                        renderer.setSeriesVisible(i, true);
                    }
                }
            }

            @Override
            public void chartMouseMoved(ChartMouseEvent e) {}
        });

        f.add(chartPanel);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new VisibleTest()::display);
    }
}

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