Java/Chart/XY Step Area Chart
JFreeChart: XY Step Area Chart Demo
<source lang="java">
/* ===========================================================
* 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); }
}
</source>
JFreeChart: XY Step Chart Demo
<source lang="java">
/* ===========================================================
* 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(); }
}
</source>