Java/Chart/XY Step Area Chart

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.ru/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);
    }
}

JFreeChart: XY Step 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.]
 *
 * --------------------
 * XYStepChartDemo.java
 * --------------------
 * (C) Copyright 2002-2004, by Roger Studner and Contributors.
 *
 * Original Author:  Roger Studner;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: XYStepChartDemo.java,v 1.13 2004/04/26 19:40:15 taqua Exp $
 *
 * Changes
 * -------
 * 13-May-2002 : Version 1, contributed by Roger Studner (DG);
 * 11-Oct-2002 : Moved create method to ChartFactory class, and fixed issues reported by
 *               Checkstyle (DG);
 *
 */
package org.jfree.chart.demo;
import java.awt.BasicStroke;
import java.awt.Color;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.date.DateUtilities;
import org.jfree.ui.RefineryUtilities;
/**
 * A demonstration of the {@link org.jfree.chart.renderer.XYStepRenderer} class.
 *
 * @author Roger Studner
 */
public class XYStepChartDemo {
    /** A frame for displaying the chart. */
    private ChartFrame frame = null;
    /**
     * Displays a sample chart in its own frame.
     */
    private void displayChart() {
        if (this.frame == null) {
            // create a default chart based on some sample data...
            final String title = "LCACs in use at given time";
            final String xAxisLabel = "Time";
            final String yAxisLabel = "Number of Transports";
            final XYDataset data = createStepXYDataset();
            final JFreeChart chart = ChartFactory.createXYStepChart(
                title,
                xAxisLabel, yAxisLabel,
                data,
                PlotOrientation.VERTICAL,
                true,   // legend
                true,   // tooltips
                false   // urls
            );
            // then customise it a little...
            chart.setBackgroundPaint(new Color(216, 216, 216));
            final XYPlot plot = chart.getXYPlot();
            plot.getRenderer().setSeriesStroke(0, new BasicStroke(2.0f));
            plot.getRenderer().setSeriesStroke(1, new BasicStroke(2.0f));
            
            // and present it in a frame...
            this.frame = new ChartFrame("Plan Comparison", chart);
            this.frame.pack();
            RefineryUtilities.positionFrameRandomly(this.frame);
            this.frame.setVisible(true);
        }
        else {
            this.frame.setVisible(true);
            this.frame.requestFocus();
        }
    }
    /**
     * Creates and returns a sample dataset for the XY "Step" chart.
     *
     * @return the sample dataset.
     */
    public static XYDataset createStepXYDataset() {
        final int feb = 2;
        final XYSeries s1 = new XYSeries("Plan 1", false, true);
        s1.add(DateUtilities.createDate(2002, feb, 19, 8, 0).getTime(), 0);
        s1.add(DateUtilities.createDate(2002, feb, 19, 8, 1).getTime(), 2);
        s1.add(DateUtilities.createDate(2002, feb, 19, 9, 5).getTime(), 4);
        s1.add(DateUtilities.createDate(2002, feb, 19, 10, 6).getTime(), 4);
        s1.add(DateUtilities.createDate(2002, feb, 19, 11, 6).getTime(), 5);
        s1.add(DateUtilities.createDate(2002, feb, 19, 12, 6).getTime(), 3);
        s1.add(DateUtilities.createDate(2002, feb, 19, 13, 6).getTime(), 6);
        s1.add(DateUtilities.createDate(2002, feb, 19, 14, 6).getTime(), 6);
        s1.add(DateUtilities.createDate(2002, feb, 19, 15, 30).getTime(), 2);
        s1.add(DateUtilities.createDate(2002, feb, 19, 16, 7).getTime(), 0);
        final XYSeries s2 = new XYSeries("Plan 2");
        s2.add(DateUtilities.createDate(2002, feb, 19, 8, 40).getTime(), 0);
        s2.add(DateUtilities.createDate(2002, feb, 19, 8, 45).getTime(), 1);
        s2.add(DateUtilities.createDate(2002, feb, 19, 9, 0).getTime(), 6);
        s2.add(DateUtilities.createDate(2002, feb, 19, 10, 6).getTime(), 2);
        s2.add(DateUtilities.createDate(2002, feb, 19, 10, 45).getTime(), 4);
        s2.add(DateUtilities.createDate(2002, feb, 19, 12, 0).getTime(), 7);
        s2.add(DateUtilities.createDate(2002, feb, 19, 13, 0).getTime(), 5);
        s2.add(DateUtilities.createDate(2002, feb, 19, 14, 6).getTime(), 4);
        s2.add(DateUtilities.createDate(2002, feb, 19, 15, 15).getTime(), 4);
        s2.add(DateUtilities.createDate(2002, feb, 19, 16, 0).getTime(), 0);
        final XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(s1);
        dataset.addSeries(s2);
        return dataset;
    }
    // ****************************************************************************
    // * JFREECHART DEVELOPER GUIDE                                               *
    // * The JFreeChart Developer Guide, written by David Gilbert, is available   *
    // * to purchase from Object Refinery Limited:                                *
    // *                                                                          *
    // * http://www.object-refinery.ru/jfreechart/guide.html                     *
    // *                                                                          *
    // * Sales are used to provide funding for the JFreeChart project - please    * 
    // * support us so that we can continue developing free software.             *
    // ****************************************************************************
    
    /**
     * The starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(final String[] args) {
        final XYStepChartDemo demo = new XYStepChartDemo();
        demo.displayChart();
    }
}