JfreeChart自定义票证标签 [英] JfreeChart customize ticket labels

问题描述

我正在使用JFreechart在使用 JasperReports 生成的报告中绘制图表（实际上我正在使用是您问题的解决方案。您需要为每个值提供一个带有文本的新轴

  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）; 
  

这里是完整的代码

  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; 
 
 
公共类BarChartDemo7扩展ApplicationFrame {
 
静态类CustomRenderer扩展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 [系列％this.colors1.length]; 
 else 
返回this.colors1 [series％this.colors1.length]; 
} 
} 
 
 
公开BarChartDemo7（字符串标题）{
 super（title）; 
 CategoryDataset dataSet = createDataset（）; 
 JFreeChart chart = createChart（dataSet）; 
 ChartPanel面板=新ChartPanel（图表）; 
 panel.setPreferredSize（new Dimension（800,800））; 
 setContentPane（panel）; 
} 
 
 
 private static CategoryDataset createDataset（）{
 //行键... 
 final String series1 =ABC; 
 final String series2 =XYZ; 
 
 //列密钥... 
 final String category1 =A; 
 final String category2 =B; 
 final String category3 =C; 
 final String category4 =D; 
 final String category5 =E; 
 final String category6 =F; 
 
 //创建数据集... 
 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）; 
 
返回数据集; 
} 
 
 
 
私有静态JFreeChart createChart（CategoryDataset数据集）{
 
 //创建图表... 
 JFreeChart chart = ChartFactory.createBarChart（
ABC，
，
，
数据集，
 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）; 
 
 
颜色[] color1 =新颜色[] {Color.red，Color.green，Color.blue}; 
 Color [] color2 = new Color [] {Color.gray，Color.gray.darker（）}; 
 plot.setRenderer（new CustomRenderer（color1，color2））; 
返回图表; 
} 
 
 public static void main（String [] args）{
 BarChartDemo7 demo = new BarChartDemo7（ABC）; 
 demo.pack（）; 
 RefineryUtilities.centerFrameOnScreen（demo）; 
 demo.setVisible（true）; 
} 
} 
  

I'm using JFreechart to plot a graph inside a report generated with JasperReports (actually I'm using DynamicReports which uses JasperReports).

I'm plotting a barchart and I want to have custom strings on the labels on the axis. A picture will explain everything better.

Now I've got this:

I want to obtain this:

Some suggestions?

解决方案

Here is the solution to your problem. You need to provide a new Axis with text for each value

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);

here is the code in full

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);
    }
}

这篇关于JfreeChart自定义票证标签的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！