JFreeChart: XY Step Area Chart Demo
/* ===========================================================
* 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.]
*
* ------------------------
* XYStepAreaChartDemo.java
* ------------------------
* (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors.
*
* Original Author: Matthias Rose (for Ablay & Fodi GmbH);
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* $Id: XYStepAreaChartDemo.java,v 1.12 2004/04/26 19:12:04 taqua Exp $
*
* Changes
* -------
* 26-Sep-2003 : Copied XYAreaChartDemo --> XYStepAreaChartDemo
* and adapted to test XYStepAreaRenderer (MR);
*
*/
package org.jfree.chart.demo;
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYStepAreaRenderer;
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;
/**
* A simple demonstration application showing how to create a step area chart.
*
* @author Matthias Rose
*/
public class XYStepAreaChartDemo extends ApplicationFrame implements ActionListener {
/** Vertical orientation. */
private static final String ORIENT_VERT = "Plot vertical";
/** Horizontal orientation. */
private static final String ORIENT_HORIZ = "Plot horizontal";
/** Problem data. */
private static final Object[][] TEST_DATA = {
// domain values, range values, may be null?
{new Integer(1), new Integer(500), Boolean.TRUE},
{new Integer(2), new Integer(694)},
{new Integer(3), new Integer(-734)},
{new Integer(4), new Integer(453)},
{new Integer(5), new Integer(500), Boolean.TRUE},
{new Integer(6), new Integer(200)},
{new Integer(7), new Integer(550), Boolean.TRUE},
{new Integer(8), new Integer(-150), Boolean.TRUE},
{new Integer(9), new Integer(232)},
{new Integer(10), new Integer(734)},
{new Integer(11), new Integer(400), Boolean.TRUE},
};
/** The chart panel. */
private ChartPanel chartPanel;
/** The data series. */
private XYSeries xySeries;
/** The null values checkbox. */
private JCheckBox nullValuesCheckBox;
/** The outline checkbox. */
private JCheckBox outlineCheckBox;
/** The range base text field. */
private JTextField rangeBaseTextField;
/** The orientation combobox. */
private JComboBox orientationComboBox;
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public XYStepAreaChartDemo(final String title) {
super(title);
this.xySeries = new XYSeries("Some data");
for (int i = 0; i < TEST_DATA.length; i++) {
this.xySeries.add((Integer) TEST_DATA[i][0], (Integer) TEST_DATA[i][1]);
}
final XYSeriesCollection dataset = new XYSeriesCollection(this.xySeries);
final JFreeChart chart = createChart(dataset);
this.chartPanel = new ChartPanel(chart);
// allow zooming
// this.chartPanel.setHorizontalZoom(true);
// this.chartPanel.setVerticalZoom(true);
// size
this.chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
// make stroke more striking
final Plot plot = this.chartPanel.getChart().getPlot();
plot.setOutlineStroke(new BasicStroke(2));
plot.setOutlinePaint(Color.magenta);
// add some components to make options changable
final JPanel main = new JPanel(new BorderLayout());
final JPanel optionsPanel = new JPanel();
final String[] options = {ORIENT_VERT, ORIENT_HORIZ};
this.orientationComboBox = new JComboBox(options);
this.orientationComboBox.addActionListener(this);
optionsPanel.add(this.orientationComboBox);
this.outlineCheckBox = new JCheckBox("Outline");
this.outlineCheckBox.addActionListener(this);
optionsPanel.add(this.outlineCheckBox);
optionsPanel.add(new JLabel("Base"));
this.rangeBaseTextField = new JTextField("0", 5);
this.rangeBaseTextField.addActionListener(this);
optionsPanel.add(this.rangeBaseTextField);
this.nullValuesCheckBox = new JCheckBox("NULL values");
this.nullValuesCheckBox.addActionListener(this);
optionsPanel.add(this.nullValuesCheckBox);
main.add(optionsPanel, BorderLayout.SOUTH);
main.add(this.chartPanel);
setContentPane(main);
}
// ****************************************************************************
// * 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. *
// ****************************************************************************
/**
* Creates a chart.
*
* @param dataset the dataset.
*
* @return A chart.
*/
private JFreeChart createChart(final XYDataset dataset) {
final JFreeChart chart = ChartFactory.createXYStepAreaChart(
"XY Step Area Chart Demo",
"Domain (X)", "Range (Y)",
dataset,
PlotOrientation.VERTICAL,
true, // legend
true, // tool tips
false // URLs
);
// color
final XYPlot plot = chart.getXYPlot();
plot.getRenderer().setSeriesPaint(0, Color.green);
// fill shapes
final XYStepAreaRenderer rend = (XYStepAreaRenderer) plot.getRenderer();
rend.setShapesFilled(true);
return chart;
}
/**
* Change options according to settings.
*
* @param evt the event.
*/
public void actionPerformed(final ActionEvent evt) {
final Object source = evt.getSource();
if (source == this.nullValuesCheckBox) {
final boolean withNulls = this.nullValuesCheckBox.isSelected();
for (int i = 0; i < TEST_DATA.length; i++) {
Integer yVal = (Integer) TEST_DATA[i][1];
if (withNulls && TEST_DATA[i].length > 2) {
yVal = null;
}
this.xySeries.getDataItem(i).setY(yVal);
}
}
else if (source == this.outlineCheckBox) {
final XYPlot plot = (XYPlot) this.chartPanel.getChart().getPlot();
((XYStepAreaRenderer) plot.getRenderer()).setOutline(this.outlineCheckBox.isSelected());
}
else if (source == this.rangeBaseTextField) {
final double val = Double.parseDouble(this.rangeBaseTextField.getText());
final XYPlot plot = (XYPlot) this.chartPanel.getChart().getPlot();
final XYStepAreaRenderer rend = (XYStepAreaRenderer) plot.getRenderer();
rend.setRangeBase(val);
}
else if (source == this.orientationComboBox) {
final XYPlot plot = (XYPlot) this.chartPanel.getChart().getPlot();
if (this.orientationComboBox.getSelectedItem() == ORIENT_HORIZ) {
plot.setOrientation(PlotOrientation.HORIZONTAL);
}
else if (this.orientationComboBox.getSelectedItem() == ORIENT_VERT) {
plot.setOrientation(PlotOrientation.VERTICAL);
}
}
this.chartPanel.repaint();
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final XYStepAreaChartDemo demo = new XYStepAreaChartDemo("Step Area XY Chart Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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