改变legend（图释的位置） 

 1 import java.awt.Color;
 2 import java.awt.Graphics;
 3 import java.awt.Graphics2D;
 4 import java.awt.Rectangle;
 5 import java.util.Map;
 6 
 7 import javax.swing.JComponent;
 8 import javax.swing.JFrame;
 9 import javax.swing.border.LineBorder;
10 
11 import org.jfree.chart.ChartFactory;
12 import org.jfree.chart.ChartFrame;
13 import org.jfree.chart.ChartTheme;
14 import org.jfree.chart.JFreeChart;
15 import org.jfree.chart.StandardChartTheme;
16 import org.jfree.chart.block.BlockFrame;
17 import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
18 import org.jfree.chart.labels.StandardPieToolTipGenerator;
19 import org.jfree.chart.plot.PiePlot;
20 import org.jfree.chart.title.LegendTitle;
21 import org.jfree.data.general.DefaultPieDataset;
22 import org.jfree.ui.RectangleEdge;
23 import org.jfree.ui.RectangleInsets;
24 import org.jfree.util.Rotation;
25 
26 
27 import com.lowagie.text.Font;
28 
29 public class Main {
30    public static void main(String[] argv) {
31        DefaultPieDataset dataset = new DefaultPieDataset();
32             dataset.setValue("a",15);
33             dataset.setValue("b",20);
34             dataset.setValue("c",25);
35             dataset.setValue("d",30);
36             dataset.setValue("e",3);
37             dataset.setValue("f",2);
38             dataset.setValue("g",4);
39             dataset.setValue("h",5);
40 
41         PiePlot plot = new PiePlot(dataset);
42         JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, true);

//set legend
43         LegendTitle legend = chart.getLegend();
44         legend.setPosition(RectangleEdge.RIGHT);

//invisible the frames around legend
　　　　　　legend.setBorder(0, 0, 0, 0);


45         ChartTheme currentTheme = new StandardChartTheme("JFree");
46         currentTheme.apply(chart);
47 
48         plot.setStartAngle(290);
49         plot.setDirection(Rotation.CLOCKWISE);
50         plot.setForegroundAlpha(0.7f);
51         plot.setBackgroundAlpha(0.0f);
52 //        plot.setSimpleLabels(true);
53         
54         //disable labels
55         plot.setLabelLinksVisible(false);
56         plot.setLabelPaint(Color.white);
57         plot.setLabelShadowPaint(Color.white);
58         plot.setLabelBackgroundPaint(Color.white);
59 //        plot.setLabelLinkPaint(Color.white);
60         plot.setLabelOutlinePaint(Color.white);
61         
62         //set outline for pie
63         plot.setOutlinePaint(Color.white);
64         
65       66         
67         
68 //        plot.setLabelFont(new Font("Arial", Font.BOLD, 10));
69         plot.setLegendLabelGenerator(
70                 new StandardPieSectionLabelGenerator("{0}: {1}({2})"));
71 //        plot.setLegendLabelToolTipGenerator(
72 //                new StandardPieSectionLabelGenerator("{0} {1}, {2}"));
73         plot.setNoDataMessage("No data to display");
74         ChartFrame frame = new ChartFrame("chart",chart);
75         frame.setVisible(true);
76         frame.setSize(500,500);
77    }
78 }

This pie does not has lebal,all of which has been set white or transparent. And put the legend on the right side.

posted on 2013-05-31 05:45  Step-BY-Step  阅读(683)  评论(0)  编辑  收藏  举报

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