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2010-06-01T06:52:14Z

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в 18:01, 31 мая 2010

2010-05-31T18:01:45Z

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== 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>

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Admin: 1 версия

в 18:01, 31 мая 2010