Please try the following test program which rotates the label of a NumberAxis and changes the location after one complete turn.
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/* -------------------
* LineChartDemo1.java
* -------------------
* (C) Copyright 2002-2011, by Object Refinery Limited.
*
*/
package demo;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Ellipse2D;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.Timer;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLabelLocation;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.HorizontalAlignment;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RefineryUtilities;
/**
* A simple demonstration application showing how to create a line chart using data from a
* {@link CategoryDataset}.
*/
public class LineChartDemo1
extends ApplicationFrame
{
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public LineChartDemo1(String title)
{
super(title);
JPanel chartPanel = createDemoPanel();
chartPanel.setPreferredSize(new Dimension(500, 270));
setContentPane(chartPanel);
}
/**
* Creates a sample dataset.
*
* @return The dataset.
*/
private static CategoryDataset createDataset()
{
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(212, "Classes", "JDK 1.0");
dataset.addValue(504, "Classes", "JDK 1.1");
dataset.addValue(1520, "Classes", "JDK 1.2");
dataset.addValue(1842, "Classes", "JDK 1.3");
dataset.addValue(2991, "Classes", "JDK 1.4");
dataset.addValue(3500, "Classes", "JDK 1.5");
return dataset;
}
/**
* Creates a sample chart.
*
* @param dataset a dataset.
* @return The chart.
*/
private static JFreeChart createChart(CategoryDataset dataset)
{
// create the chart...
JFreeChart chart = ChartFactory.createLineChart("Java Standard Class Library", // chart
// title
null, // domain axis label
"Class Count", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
false, // include legend
true, // tooltips
false // urls
);
chart.addSubtitle(new TextTitle("Number of Classes By Release"));
TextTitle source = new TextTitle("Source: Java In A Nutshell (5th Edition) " + "by David Flanagan (O'Reilly)");
source.setFont(new Font("SansSerif", Font.PLAIN, 10));
source.setPosition(RectangleEdge.BOTTOM);
source.setHorizontalAlignment(HorizontalAlignment.RIGHT);
chart.addSubtitle(source);
CategoryPlot plot = (CategoryPlot)chart.getPlot();
plot.setRangePannable(true);
plot.setRangeGridlinesVisible(false);
URL imageURL = LineChartDemo1.class.getClassLoader().getResource("OnBridge11small.png");
if (imageURL != null)
{
ImageIcon temp = new ImageIcon(imageURL);
// use ImageIcon because it waits for the image to load...
chart.setBackgroundImage(temp.getImage());
plot.setBackgroundPaint(null);
}
// customise the range axis...
final NumberAxis rangeAxis = (NumberAxis)plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
// ===============================================================================
// Rotate the axis label
//
new Timer(5, new ActionListener()
{
private double startAngle = 0.0d;
@Override
public void actionPerformed(ActionEvent e)
{
this.startAngle += 1;
if (this.startAngle > 359)
{
// reset to 0°
this.startAngle = 0;
// switch the label location
if (rangeAxis.getLabelLocation() == AxisLabelLocation.HIGH_END)
{
rangeAxis.setLabelLocation(AxisLabelLocation.MIDDLE);
}
else if (rangeAxis.getLabelLocation() == AxisLabelLocation.MIDDLE)
{
rangeAxis.setLabelLocation(AxisLabelLocation.LOW_END);
}
else if (rangeAxis.getLabelLocation() == AxisLabelLocation.LOW_END)
{
rangeAxis.setLabelLocation(AxisLabelLocation.HIGH_END);
}
}
rangeAxis.setLabelAngle(Math.toRadians(this.startAngle));
}
}).start();
// ===============================================================================
ChartUtilities.applyCurrentTheme(chart);
// customise the renderer...
LineAndShapeRenderer renderer = (LineAndShapeRenderer)plot.getRenderer();
renderer.setBaseShapesVisible(true);
renderer.setDrawOutlines(true);
renderer.setUseFillPaint(true);
renderer.setBaseFillPaint(Color.white);
renderer.setSeriesStroke(0, new BasicStroke(3.0f));
renderer.setSeriesOutlineStroke(0, new BasicStroke(2.0f));
renderer.setSeriesShape(0, new Ellipse2D.Double(-5.0, -5.0, 10.0, 10.0));
return chart;
}
/**
* Creates a panel for the demo (used by SuperDemo.java).
*
* @return A panel.
*/
public static JPanel createDemoPanel()
{
JFreeChart chart = createChart(createDataset());
ChartPanel panel = new ChartPanel(chart);
panel.setMouseWheelEnabled(true);
return panel;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args)
{
LineChartDemo1 demo = new LineChartDemo1("JFreeChart: LineChartDemo1.java");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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