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PlotOrientation of BoxAndWhiskerChart JFreeChart

I have a question about JFreeChart: Is it possible to change the PlotOrientation of a BoxAndWhiskerChart to horizontal? I have a histogram, and I want to add a BoxAndWhiskerChart below. I need it horizontal so I can use the same axis scale. I tried to change the orientation in the Plot and ChartPanel.

the look of my JFrame



@Catalina Island shows the correct way to change the PlotOrientation here, but you may run into a bug in the BoxAndWhiskerRenderer shown below for PlotOrientation.HORIZONTAL. Note the truncated line on the lower whisker.

Original image

The problem is here in drawHorizontalItem():

g2.draw(new Line2D.Double(xxMin, yymid - halfW, xxMin, yy + halfW));

which should be this:

g2.draw(new Line2D.Double(xxMin, yymid - halfW, xxMin, yymid + halfW));

Updated image

Code as tested:

import java.awt.Dimension;
import java.awt.EventQueue;
import java.util.Arrays;
import javax.swing.JFrame;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;

 * @see
public class BoxPlot {

    private void display() {
        JFrame f = new JFrame("BoxPlot");
        DefaultBoxAndWhiskerCategoryDataset data = new DefaultBoxAndWhiskerCategoryDataset();
        data.add(Arrays.asList(30, 36, 46, 55, 65, 76, 81, 80, 71, 59, 44, 34), "Planet", "Endor");
        JFreeChart chart = ChartFactory.createBoxAndWhiskerChart(
            "Box and Whisker Chart", "Planet", "Temperature", data, false);
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        f.add(new ChartPanel(chart) {

            public Dimension getPreferredSize() {
                return new Dimension(500, 300);

    public static void main(String[] args) {
        EventQueue.invokeLater(new BoxPlot()::display);
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