由于JFreeChart组件的版本、操作平台、JDK的设置等因素,在使用JFreeChart组件时可能会出现中文乱码的现象。遇到此问题时,可通过设置文字的字体来解决问题。在此提供以下两种解决此问题的方法。
一、设置主题的样式(强烈推荐)
在制图前,创建主题样式并制定样式中的字体,通过ChartFactory的setChartTheme()方法设置主题样式。
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StandardChartTheme standardChartTheme=new StandardChartTheme("CN");
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standardChartTheme.setExtraLargeFont(new Font("隶书",Font.BOLD,20));
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standardChartTheme.setRegularFont(new Font("宋书",Font.PLAIN,15));
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standardChartTheme.setLargeFont(new Font("宋书",Font.PLAIN,15));
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- ChartFactory.setChartTheme(standardChartTheme);
例如:
- package com.zzs.jfreechart.demo;
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import java.awt.Font;
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import org.jfree.chart.ChartFactory;
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import org.jfree.chart.ChartFrame;
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import org.jfree.chart.JFreeChart;
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import org.jfree.chart.StandardChartTheme;
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import org.jfree.chart.plot.PlotOrientation;
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import org.jfree.chart.title.LegendTitle;
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import org.jfree.chart.title.TextTitle;
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import org.jfree.data.category.DefaultCategoryDataset;
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public class JfreeChartTest {
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public static void main(String[] args) {
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DefaultCategoryDataset dataset = new DefaultCategoryDataset();
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dataset.addValue(100, "北京", "苹果");
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dataset.addValue(100, "上海", "苹果");
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dataset.addValue(100, "广州", "苹果");
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dataset.addValue(200, "北京", "梨子");
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dataset.addValue(200, "上海", "梨子");
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dataset.addValue(200, "广州", "梨子");
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dataset.addValue(300, "北京", "葡萄");
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dataset.addValue(300, "上海", "葡萄");
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dataset.addValue(300, "广州", "葡萄");
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dataset.addValue(400, "北京", "香蕉");
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dataset.addValue(400, "上海", "香蕉");
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dataset.addValue(400, "广州", "香蕉");
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dataset.addValue(500, "北京", "荔枝");
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dataset.addValue(500, "上海", "荔枝");
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dataset.addValue(500, "广州", "荔枝");
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StandardChartTheme standardChartTheme=new StandardChartTheme("CN");
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standardChartTheme.setExtraLargeFont(new Font("隶书",Font.BOLD,20));
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standardChartTheme.setRegularFont(new Font("宋书",Font.PLAIN,15));
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standardChartTheme.setLargeFont(new Font("宋书",Font.PLAIN,15));
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- ChartFactory.setChartTheme(standardChartTheme);
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JFreeChart chart=ChartFactory.createBarChart3D("水果产量图", "水果", "水果", dataset, PlotOrientation.VERTICAL, true, true, true);
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ChartFrame frame=new ChartFrame ("水果产量图 ",chart,true);
- frame.pack();
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frame.setVisible(true);
- }
- }
二、制定乱码文字的字体
使用JFreeChart绘制图表的时候,如果使用默认的字体会导致图标中的汉字显示为乱码。解决方法如下:
JFreeChart是用户使用该库提供的各类图标的统一接口,JFreeChart主要由三个部分构成:title(标题),legend(图释),plot(图表主体)。三个部分设置字体的方法分别如下:
1.Title
- TextTitle textTitle = freeChart.getTitle();
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textTitle.setFont(new Font("宋体",Font.BOLD,20));
2.Legent
- LegendTitle legend = freeChart.getLegend();
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if (legend!=null) {
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legend.setItemFont(new Font("宋体", Font.BOLD, 20));
- }
3.Plot
对于不同类型的图表对应Plot的不同的实现类,设置字体的方法也不完全相同。
对于使用CategoryPlot的图表(如柱状图):
- CategoryPlot plot = (CategoryPlot)freeChart.getPlot();
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CategoryAxis domainAxis = plot.getDomainAxis();
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domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
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ValueAxis valueAxis = plot.getRangeAxis();
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valueAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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valueAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
- CategoryPlot plot = (CategoryPlot)freeChart.getPlot();
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CategoryAxis domainAxis = plot.getDomainAxis();
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domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
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ValueAxis valueAxis = plot.getRangeAxis();
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valueAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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valueAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
对于使用PiePlot的图标(如饼状图):
- PiePlot plot = (PiePlot)freeChart.getPlot();
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plot.setLabelFont(new Font("宋体",Font.BOLD,15));
对于使用PiePlot的图标(如饼状图):
- PiePlot plot = (PiePlot)freeChart.getPlot();
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plot.setLabelFont(new Font("宋体",Font.BOLD,15));
下面一个实例:
- package com.zzs.jfreechart.demo;
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import java.awt.Font;
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import javax.swing.JPanel;
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import org.jfree.chart.ChartFactory;
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import org.jfree.chart.ChartPanel;
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import org.jfree.chart.JFreeChart;
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import org.jfree.chart.plot.PiePlot;
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import org.jfree.chart.title.LegendTitle;
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import org.jfree.chart.title.TextTitle;
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import org.jfree.data.general.DefaultPieDataset;
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import org.jfree.data.general.PieDataset;
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import org.jfree.ui.ApplicationFrame;
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public class JfreeChartOne extends ApplicationFrame {
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private static final long serialVersionUID = 1L;
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public JfreeChartOne(String s)
- {
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super(s);
- setContentPane(createJPanel());
- }
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public static void main(String[] args) {
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JfreeChartOne one = new JfreeChartOne("CityInfoPort公司组织架构图");
- one.pack();
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one.setVisible(true);
- }
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public static PieDataset createPieDataset() {
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DefaultPieDataset defaultpiedataset = new DefaultPieDataset();
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defaultpiedataset.setValue("管理人员", 10.02D);
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defaultpiedataset.setValue("市场人员", 20.23D);
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defaultpiedataset.setValue("开发人员", 60.02D);
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defaultpiedataset.setValue("OEM人员", 10.02D);
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defaultpiedataset.setValue("其他人员", 5.11D);
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return defaultpiedataset;
- }
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public static JFreeChart createJFreeChart(PieDataset p)
- {
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JFreeChart a = ChartFactory.createPieChart("CityInfoPort公司组织架构图", p,
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true, true, true);
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- TextTitle textTitle = a.getTitle();
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textTitle.setFont(new Font("宋体", Font.BOLD, 20));
- LegendTitle legend = a.getLegend();
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if (legend != null) {
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legend.setItemFont(new Font("宋体", Font.BOLD, 20));
- }
- PiePlot pie = (PiePlot) a.getPlot();
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pie.setLabelFont(new Font("宋体", Font.BOLD, 12));
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pie.setNoDataMessage("No data available");
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pie.setCircular(true);
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pie.setLabelGap(0.01D);
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return a;
- }
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public static JPanel createJPanel() {
- JFreeChart jfreechart = createJFreeChart(createPieDataset());
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return new ChartPanel(jfreechart);
- }
- }
下面这个修改坐标轴:
- package com.zzs.jfreechart.demo;
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import java.awt.Color;
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import java.awt.Font;
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import org.jfree.chart.ChartFactory;
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import org.jfree.chart.ChartFrame;
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import org.jfree.chart.JFreeChart;
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import org.jfree.chart.axis.CategoryAxis;
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import org.jfree.chart.axis.ValueAxis;
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import org.jfree.chart.plot.XYPlot;
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import org.jfree.chart.title.LegendTitle;
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import org.jfree.chart.title.TextTitle;
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import org.jfree.data.time.Month;
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import org.jfree.data.time.TimeSeries;
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import org.jfree.data.time.TimeSeriesCollection;
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import org.jfree.ui.RectangleInsets;
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public class ShiJianXuLieTu01 {
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public static void main(String[] args) {
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TimeSeries timeseries = new TimeSeries("L&G European Index Trust",Month.class);
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timeseries.add(new Month(2, 2001), 181.8D);
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timeseries.add(new Month(3, 2001), 167.3D);
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timeseries.add(new Month(4, 2001), 153.8D);
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timeseries.add(new Month(5, 2001), 167.6D);
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timeseries.add(new Month(6, 2001), 158.8D);
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timeseries.add(new Month(7, 2001), 148.3D);
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timeseries.add(new Month(8, 2001), 153.9D);
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timeseries.add(new Month(9, 2001), 142.7D);
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timeseries.add(new Month(10, 2001), 123.2D);
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timeseries.add(new Month(11, 2001), 131.8D);
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timeseries.add(new Month(12, 2001), 139.6D);
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timeseries.add(new Month(1, 2002), 142.9D);
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timeseries.add(new Month(2, 2002), 138.7D);
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timeseries.add(new Month(3, 2002), 137.3D);
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timeseries.add(new Month(4, 2002), 143.9D);
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timeseries.add(new Month(5, 2002), 139.8D);
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timeseries.add(new Month(6, 2002), 137D);
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timeseries.add(new Month(7, 2002), 132.8D);
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TimeSeries timeseries1 = new TimeSeries("L&G UK Index Trust曾召帅",Month.class);
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timeseries1.add(new Month(2, 2001), 129.6D);
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timeseries1.add(new Month(3, 2001), 123.2D);
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timeseries1.add(new Month(4, 2001), 117.2D);
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timeseries1.add(new Month(5, 2001), 124.1D);
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timeseries1.add(new Month(6, 2001), 122.6D);
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timeseries1.add(new Month(7, 2001), 119.2D);
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timeseries1.add(new Month(8, 2001), 116.5D);
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timeseries1.add(new Month(9, 2001), 112.7D);
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timeseries1.add(new Month(10, 2001), 101.5D);
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timeseries1.add(new Month(11, 2001), 106.1D);
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timeseries1.add(new Month(12, 2001), 110.3D);
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timeseries1.add(new Month(1, 2002), 111.7D);
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timeseries1.add(new Month(2, 2002), 111D);
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timeseries1.add(new Month(3, 2002), 109.6D);
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timeseries1.add(new Month(4, 2002), 113.2D);
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timeseries1.add(new Month(5, 2002), 111.6D);
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timeseries1.add(new Month(6, 2002), 108.8D);
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timeseries1.add(new Month(7, 2002), 101.6D);
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TimeSeriesCollection timeseriescollection = new TimeSeriesCollection();
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- timeseriescollection.addSeries(timeseries);
- timeseriescollection.addSeries(timeseries1);
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timeseriescollection.setDomainIsPointsInTime(true);
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JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("合法 & General Unit Trust Prices",
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"日期",
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"暗示的话发神经提防",
- timeseriescollection,
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true,
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true,
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false);
- jfreechart.setBackgroundPaint(Color.white);
- TextTitle textTitle = jfreechart.getTitle();
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textTitle.setFont(new Font("宋体", Font.BOLD, 20));
- LegendTitle legend = jfreechart.getLegend();
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if (legend != null) {
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legend.setItemFont(new Font("宋体", Font.BOLD, 20));
- }
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XYPlot xyplot = (XYPlot)jfreechart.getPlot();
- ValueAxis domainAxis=xyplot.getDomainAxis();
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domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
- ValueAxis rangeAxis=xyplot.getRangeAxis();
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rangeAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));
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rangeAxis.setLabelFont(new Font("宋体",Font.BOLD,20));
- xyplot.setBackgroundPaint(Color.lightGray);
- xyplot.setDomainGridlinePaint(Color.white);
- xyplot.setRangeGridlinePaint(Color.white);
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xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
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xyplot.setDomainCrosshairVisible(true);
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xyplot.setRangeCrosshairVisible(true);
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ChartFrame frame=new ChartFrame ("折线图 ",jfreechart,true);
- frame.pack();
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frame.setVisible(true);
- }
- }
原文链接:http://zengzhaoshuai.iteye.com/blog/1000378
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NULL 博文链接:https://liujun58love.iteye.com/blog/1711390