Home Chartgraphs Box And Whisker Chart Example using JFreeChart

Box And Whisker Chart Example using JFreeChart
Posted on: September 1, 2008 at 12:00 AM

This Example shows you how to create a box and whisker chart using JFreeChart. Code of the chart given below shows product value at different date .

Box And Whisker Chart Example using JFreeChart

This Example shows you how to create a box and whisker chart using JFreeChart. Code of the chart given below shows product value at different date .

In the code given below we have extended class ApplicationFrame to create a frame and also pass a string value to the constructor of ApplicationFrame class by using super keyword that will be name of the created frame.

Methods used in this example are described below:

pack(): This method invokes the layout manager.

centerFrameOnScreen(): This method is used for the position of the frame in the middle of the screen.

setVisible(): This method is used for display frame on the screen.

add(): This method is used for added data into DefaultBoxAndWhiskerXYDataset class object.

createBoxAndWhiskerChart(): This method is used to create box and whisker chart for given values. It takes title, domain axisa label, range axis label, dataset and legend as parameters.

BoxAndWhiskerChart.java


import java.awt.*;



import java.util.List;

import java.util.ArrayList;

import java.util.Date;



import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.data.statistics.BoxAndWhiskerCalculator;

import org.jfree.data.statistics.BoxAndWhiskerXYDataset;

import org.jfree.data.statistics.DefaultBoxAndWhiskerXYDataset;

import org.jfree.date.DateUtilities;

import org.jfree.ui.ApplicationFrame;

import org.jfree.ui.RefineryUtilities;



public class BoxAndWhiskerChart extends ApplicationFrame {



  public BoxAndWhiskerChart(String titel) {

  super(titel);



  final BoxAndWhiskerXYDataset dataset = createDataset();

  final JFreeChart chart = createChart(dataset);



  final ChartPanel chartPanel = new ChartPanel(chart);

  chartPanel.setPreferredSize(new java.awt.Dimension(500, 300));

  setContentPane(chartPanel);



  }



  private BoxAndWhiskerXYDataset createDataset() {

  final int ENTITY_COUNT = 14;



  DefaultBoxAndWhiskerXYDataset dataset = new 

DefaultBoxAndWhiskerXYDataset("Test");

for (int i = 0; i < ENTITY_COUNT; i++) { Date date = DateUtilities.createDate(2003, 7, i + 1, 12, 0); List values = new ArrayList(); for (int j = 0; j < 10; j++) { values.add(new Double(10.0 + Math.random() * 10.0)); values.add(new Double(13.0 + Math.random() * 4.0)); } dataset.add(date, BoxAndWhiskerCalculator.calculateBoxAndWhiskerStatistics(values)); } return dataset; } private JFreeChart createChart( final BoxAndWhiskerXYDataset dataset) { JFreeChart chart = ChartFactory.createBoxAndWhiskerChart( "Box and Whisker Chart", "Time", "Value", dataset, true); chart.setBackgroundPaint(new Color(249, 231, 236)); return chart; } public static void main(final String[] args) { final BoxAndWhiskerChart demo = new BoxAndWhiskerChart(""); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }

Output:

Download code

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