jfreechart之折线图

import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.DefaultCategoryDataset; /** * * @author 刘毅 * @date 2010-2-25 * @ClassName PolyLine.java * @Email [email protected] * @param 折线图 * @param */ public class PolyLine { public static void createPolyLine(){ DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(100, "测2", "安全"); dataset.addValue(150, "测3", "流"); dataset.addValue(300, "测3", "结果"); dataset.addValue(100, "测4", "效益"); //三维折线图 createLineChart3D JFreeChart chart = ChartFactory.createLineChart( "曲线图", // 标题 "曲线", // 横坐标 "值", // 纵坐标 dataset, // 数据 PlotOrientation.VERTICAL, // 竖直图表 true, // 是否显示legend false, // 是否显示tooltip false // 是否使用url链接 ); //设置字体 JfreeChinese.setChineseForXY(chart); FileOutputStream fos = null; try { fos = new FileOutputStream("src/poly.png"); ChartUtilities.writeChartAsPNG(fos, chart, 400, 300); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if(fos != null){ fos.close(); } } catch (IOException e) { e.printStackTrace(); } } } public static void main(String[] args) { PolyLine.createPolyLine(); } }

 

原文地址：http://ajava.org/course/open/17907.html