A Demo Polar Plot Rendered in ImageJ

Polar_Plot_Demo.bsh

/* Polar_Plot_Demo.bsh
 * IJ BAR: https://github.com/tferr/Scripts#scripts
 *
 * Beanshell implementation of JFreeChart[1] PolarChartDemo[2] 
 * 
 * [1] http://www.jfree.org/jfreechart/api/javadoc/
 * [2] http://www.java2s.com/Code/Java/Chart/JFreeChartPolarChartDemo.htm
 */

import ij.gui.GUI;
import ij.plugin.frame.PlugInFrame;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.PolarChartPanel;
import org.jfree.chart.plot.PolarPlot;
import org.jfree.chart.renderer.DefaultPolarItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

/** Creates a sample dataset */	  
XYDataset createDataset() {	   
	XYSeriesCollection data = new XYSeriesCollection();
	XYSeries series1 = createRandomData("Series 1", 75.0, 10.0);
	XYSeries series2 = createRandomData("Series 2", 50.0, 5.0);
	XYSeries series3 = createRandomData("Series 3", 25.0, 1.0);
	data.addSeries(series1);
	data.addSeries(series2);
	data.addSeries(series3);
	return data;
}
	
/** Creates a sample chart */  
JFreeChart createChart(XYDataset dataset) {
	JFreeChart chart = ChartFactory.createPolarChart(
		"Polar Chart Demo", dataset, true, true, false
	); 
	PolarPlot plot = (PolarPlot) chart.getPlot();
	DefaultPolarItemRenderer renderer = (DefaultPolarItemRenderer) plot.getRenderer();
	renderer.setSeriesFilled(2, true);
	return chart;
}
	
/**
 * Creates a series containing random data.
 * 
 * @param name	the series name.
 * @param baseRadius  the base radius.
 * @param thetaInc	the angle increment.
 * 
 * @return The series.
 */
XYSeries createRandomData(String name, double baseRadius, double thetaInc) {
	XYSeries series = new XYSeries(name);
	for (double theta = 0.0; theta < 360.0; theta += thetaInc) {
		double radius = baseRadius * (1.0 + Math.random());
		series.add(theta, radius);
	}
	return series;
}

JFreeChart chart = createChart(createDataset());
ChartPanel chartPanel = new PolarChartPanel(chart);

// Display analysis in IJ
PlugInFrame frame = new PlugInFrame("Polar Plot Demo");
frame.add(chartPanel);
frame.pack();
GUI.center(frame);
frame.setVisible(true);