jfreechart之折線圖

<PRE style="BACKGROUND-COLOR: #c5c5c5; FONT-WEIGHT: bold" class=java name="code">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 劉毅
• @date 2010-2-25
• @ClassName PolyLine.java
• @Email liu_yi126@163.com
• @param 折線圖

• @param */ public class PolyLine { public static void createPolyLine(){

  DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(100, "測2", "安全"); dataset.addValue(150, "測3", "流"); dataset.addValue(300, "測3", "結果"); dataset.addValue(100, "測4", "效益"); //三維折線圖createLineChart3D JFreeChart chart = ChartFactory.createLineChart(

  "曲線圖",                    // 標題
  "曲線",                      // 橫坐標
  "值",                     // 縱坐標
  dataset,                    // 數據
  PlotOrientation.VERTICAL,   // 豎直圖表
  true,                       // 是否顯示legend
  false,                      // 是否顯示tooltip
  false                       // 是否使用url鏈接
  

  ); //設置字體 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(); }

} </PRE>