jfreechart的定製票標籤

Question

我使用JFreeChart的繪製與JasperReports產生的（其實我使用DynamicReports它使用的JasperReports）報告中的圖表。

我正在繪製一個barchart，我想在軸上的標籤上有自定義字符串。一張照片會更好地解釋一切。

現在我有這樣的：

我想獲得此：

一些建議嗎？

Answer 1

Here是解決您的問題。您需要提供一個新的軸與文本的每個值

String[] grade = new String[6]; 
grade[0] = "String0"; 
grade[1] = "String1"; 
grade[2] = "String2"; 
grade[3] = "String3"; 
grade[4] = "String4"; 
grade[5] = ""; 

SymbolAxis rangeAxis = new SymbolAxis("", grade); 
rangeAxis.setTickUnit(new NumberTickUnit(1)); 
rangeAxis.setRange(0,5); 
plot.setRangeAxis(rangeAxis); 

這裏是全

import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.Paint; 

import org.jfree.chart.ChartFactory; 
import org.jfree.chart.ChartPanel; 
import org.jfree.chart.JFreeChart; 
import org.jfree.chart.axis.NumberTickUnit; 
import org.jfree.chart.axis.SymbolAxis; 
import org.jfree.chart.plot.CategoryPlot; 
import org.jfree.chart.plot.PlotOrientation; 
import org.jfree.chart.renderer.category.BarRenderer; 
import org.jfree.data.category.CategoryDataset; 
import org.jfree.data.category.DefaultCategoryDataset; 
import org.jfree.ui.ApplicationFrame; 
import org.jfree.ui.RefineryUtilities; 


public class BarChartDemo7 extends ApplicationFrame { 

    static class CustomRenderer extends BarRenderer { 

     private final Paint[] colors1; 
     private final Paint[] colors2; 

     public CustomRenderer(Paint[] colors1,Paint[] colors2) { 
      this.colors1 = colors1; 
      this.colors2 = colors2; 
     } 

     @Override 
     public Paint getItemPaint(int series, int category) { 
      if (category == 4) 
       return this.colors2[series % this.colors1.length]; 
      else 
       return this.colors1[series % this.colors1.length]; 
     } 
    } 


    public BarChartDemo7(String title) { 
     super(title); 
     CategoryDataset dataSet=createDataset(); 
     JFreeChart chart=createChart(dataSet); 
     ChartPanel panel=new ChartPanel(chart); 
     panel.setPreferredSize(new Dimension(800,800)); 
     setContentPane(panel); 
    } 


    private static CategoryDataset createDataset() { 
     // row keys... 
     final String series1 = "ABC"; 
     final String series2 = "XYZ"; 

     // column keys... 
     final String category1 = "A"; 
     final String category2 = "B"; 
     final String category3 = "C"; 
     final String category4 = "D"; 
     final String category5 = "E"; 
     final String category6 = "F"; 

     // create the dataset... 
     final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); 

     dataset.addValue(0, series1, category1); 
     dataset.addValue(1, series1, category2); 
     dataset.addValue(4, series1, category3); 
     dataset.addValue(3, series1, category4); 
     dataset.addValue(2, series1, category5); 
     dataset.addValue(4, series1, category6); 


     dataset.addValue(4, series2, category1); 
     dataset.addValue(0, series2, category2); 
     dataset.addValue(0, series2, category3); 
     dataset.addValue(4, series2, category4); 
     dataset.addValue(3, series2, category1); 
     dataset.addValue(2, series2, category2); 
     dataset.addValue(1, series2, category5); 
     dataset.addValue(4, series2, category4); 

     return dataset; 
    } 



    private static JFreeChart createChart(CategoryDataset dataset) { 

     // create the chart... 
     JFreeChart chart = ChartFactory.createBarChart(
      "ABC",    
      "",      
      "",       
      dataset,       
      PlotOrientation.HORIZONTAL,   
      true,        
      true,        
      false        
     ); 

     chart.setBackgroundPaint(Color.white); 

     CategoryPlot plot = (CategoryPlot) chart.getPlot(); 
     plot.setBackgroundPaint(Color.WHITE); 
     plot.setDomainGridlinePaint(Color.BLACK); 
     plot.setRangeGridlinePaint(Color.BLACK); 

     String[] grade = new String[6]; 
     grade[0] = "String0"; 
     grade[1] = "String1"; 
     grade[2] = "String2"; 
     grade[3] = "String3"; 
     grade[4] = "String4"; 
     grade[5] = ""; 

     SymbolAxis rangeAxis = new SymbolAxis("", grade); 
     rangeAxis.setTickUnit(new NumberTickUnit(1)); 
     rangeAxis.setRange(0,5); 
     plot.setRangeAxis(rangeAxis); 


     Color[] color1 = new Color[]{Color.red, Color.green,Color.blue}; 
     Color[] color2 = new Color[]{Color.gray,Color.gray.darker()}; 
     plot.setRenderer(new CustomRenderer(color1,color2)); 
     return chart; 
    } 

    public static void main(String[] args) { 
     BarChartDemo7 demo = new BarChartDemo7("ABC"); 
     demo.pack(); 
     RefineryUtilities.centerFrameOnScreen(demo); 
     demo.setVisible(true); 
    } 
}