Home Chartgraphs Create a polar chart using JFreeChart



Create a polar chart using JFreeChart
Posted on: September 3, 2008 at 12:00 AM
This Example shows you how to create a polar chart using JFreeChart. Code given below creates a simple polar chart for the given values.

Create a polar chart using JFreeChart

     

This Example shows you how to create a polar chart using JFreeChart. Code given below creates a simple polar chart for the given values. 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.

createCategoryDataset(): This method is used to create the instance of CategoryDataset Interface and that contains a copy of the data in an array.

createPolarChart(): This method is used to create bar chart for given values. It takes title, dataset, legend, tool tips and urls as parameters.

saveChartAsPNG(): This method is used to save chart in to png format.

PolarChart.java


import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class PolarChart extends ApplicationFrame {

  public PolarChart(String titel) {
  super(titel);

  XYDataset dataset = createDataset();
  JFreeChart chart = createChart(dataset);
  
  ChartPanel chartPanel = new ChartPanel(chart);
  chartPanel.setPreferredSize(new java.awt.Dimension(600600));
  setContentPane(chartPanel);
  }

  private XYDataset createDataset() {
  final XYSeriesCollection data = new XYSeriesCollection();
  XYSeries series = new XYSeries("Average Size");
  series.add(4540.0);
  series.add(135.045.0);
  series.add(270.040.0);
  data.addSeries(series);
  return data;
  }

  private JFreeChart createChart(XYDataset dataset) {
  JFreeChart chart = ChartFactory.createPolarChart(
  "Polar Chart", dataset, true, true, false
  )
  return chart;
  }

  public static void main(final String[] args) {
  PolarChart chart = new PolarChart("Polar Chart");
  chart.pack();
  RefineryUtilities.centerFrameOnScreen(chart);
  chart.setVisible(true);
  }
}

Output:



Download code

Related Tags for Create a polar chart using JFreeChart:
cstringclassapplicationconstructoriostructfreewordconstcharkeyvaluechartnameusingthisappsimplecreatejfreechartframeshowforexamplekeywordvaluestoramexamextendwsshexteilsupersuperlslipeimartinpassasmtrcajclesextendedendmehowppcattorxaxampssusoctorcreatedeeatkishallivmpleaandarcodcodeconsstrrtsimxtvassriringrdthshoavbelostatiapaluhatctoframlsoicaicapleplndodeonolo


More Tutorials from this section

Ask Questions?    Discuss: Create a polar chart using JFreeChart  

Post your Comment


Your Name (*) :
Your Email :
Subject (*):
Your Comment (*):
  Reload Image
 
 

Ask Questions?

If you are facing any programming issue, such as compilation errors or not able to find the code you are looking for.

Ask your questions, our development team will try to give answers to your questions.