JFreeChart: Layered Bar Chart
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------------
* LayeredBarChartDemo1.java
* -------------------------
* (C) Copyright 2003, 2004, by Arnaud Lelievre and Contributors.
*
* Original Author: Arnaud Lelievre (for Garden);
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* $Id: LayeredBarChartDemo1.java,v 1.10 2004/04/26 19:11:55 taqua Exp $
*
* Changes
* -------
* 28-Aug-2003 : Version 1 (AL);
* 11-Nov-2003 : Minor changes (DG);
*
*/
package org.jfree.chart.demo;
import java.awt.Color;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LayeredBarRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
/**
* A simple demonstration application showing how to create a superimposed horizontal bar chart.
*
* @author Arnaud Lelievre
*/
public class LayeredBarChartDemo1 extends ApplicationFrame {
/**
* Creates a new demo instance.
*
* @param title the frame title.
*/
public LayeredBarChartDemo1(final String title) {
super(title);
final CategoryDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
}
// ****************************************************************************
// * JFREECHART DEVELOPER GUIDE *
// * The JFreeChart Developer Guide, written by David Gilbert, is available *
// * to purchase from Object Refinery Limited: *
// * *
// * http://www.object-refinery.com/jfreechart/guide.html *
// * *
// * Sales are used to provide funding for the JFreeChart project - please *
// * support us so that we can continue developing free software. *
// ****************************************************************************
/**
* Returns a sample dataset.
*
* @return a sample dataset.
*/
private CategoryDataset createDataset() {
// create a dataset...
final double[][] data = new double[][] {
{41.0, 33.0, 22.0, 64.0, 42.0, 62.0, 22.0, 14.0},
{55.0, 63.0, 55.0, 48.0, 54.0, 37.0, 41.0, 39.0},
{57.0, 75.0, 43.0, 33.0, 63.0, 46.0, 57.0, 33.0}
};
return DatasetUtilities.createCategoryDataset("Series ", "Factor ", data);
}
/**
* Creates a chart for the specified dataset.
*
* @param dataset the dataset.
*
* @return a chart.
*/
private JFreeChart createChart(final CategoryDataset dataset) {
final CategoryAxis categoryAxis = new CategoryAxis("Category");
//categoryAxis.setMaxCategoryLabelWidthRatio(10.0f);
final ValueAxis valueAxis = new NumberAxis("Score (%)");
final CategoryPlot plot = new CategoryPlot(dataset,
categoryAxis,
valueAxis,
new LayeredBarRenderer());
plot.setOrientation(PlotOrientation.HORIZONTAL);
final JFreeChart chart = new JFreeChart("Layered Bar Chart",
JFreeChart.DEFAULT_TITLE_FONT, plot, true);
// set the background color for the chart...
chart.setBackgroundPaint(Color.lightGray);
final LayeredBarRenderer renderer = (LayeredBarRenderer) plot.getRenderer();
// we can set each series bar width individually or let the renderer manage a standard view.
// the width is set in percentage, where 1.0 is the maximum (100%).
renderer.setSeriesBarWidth(0, 1.0);
renderer.setSeriesBarWidth(1, 0.7);
renderer.setSeriesBarWidth(2, 0.4);
renderer.setItemMargin(0.01);
final CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryMargin(0.25);
domainAxis.setUpperMargin(0.05);
domainAxis.setLowerMargin(0.05);
return chart;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final LayeredBarChartDemo1 demo = new LayeredBarChartDemo1("Layered Bar Chart Demo 1");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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