Java/Chart/Gantt Chart
JFreeChart: Gantt Chart Sample
JFreeChart: Gantt Demo 1
<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.] * * --------------- * GanttDemo1.java * --------------- * (C) Copyright 2002-2004, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: GanttDemo1.java,v 1.12 2004/04/26 19:11:54 taqua Exp $ * * Changes * ------- * 06-Jun-2002 : Version 1 (DG); * 10-Oct-2002 : Modified to use DemoDatasetFactory (DG); * 10-Jan-2003 : Renamed GanttDemo --> GanttDemo1 (DG); * 16-Oct-2003 : Shifted dataset from DemoDatasetFactory to this class (DG); * */
package org.jfree.chart.demo; import java.util.Calendar; import java.util.Date; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.data.category.IntervalCategoryDataset; import org.jfree.data.gantt.Task; import org.jfree.data.gantt.TaskSeries; import org.jfree.data.gantt.TaskSeriesCollection; import org.jfree.data.time.SimpleTimePeriod; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**
* A simple demonstration application showing how to create a Gantt chart.*
* This demo is intended to show the conceptual approach rather than being a polished
* implementation.
*
*
*/
public class GanttDemo1 extends ApplicationFrame {
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public GanttDemo1(final String title) {
super(title);
final IntervalCategoryDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
// add the chart to a panel...
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.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 sample dataset for a Gantt chart.
*
* @return The dataset.
*/
public static IntervalCategoryDataset createDataset() {
final TaskSeries s1 = new TaskSeries("Scheduled");
s1.add(new Task("Write Proposal",
new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
date(5, Calendar.APRIL, 2001))));
s1.add(new Task("Obtain Approval",
new SimpleTimePeriod(date(9, Calendar.APRIL, 2001),
date(9, Calendar.APRIL, 2001))));
s1.add(new Task("Requirements Analysis",
new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
date(5, Calendar.MAY, 2001))));
s1.add(new Task("Design Phase",
new SimpleTimePeriod(date(6, Calendar.MAY, 2001),
date(30, Calendar.MAY, 2001))));
s1.add(new Task("Design Signoff",
new SimpleTimePeriod(date(2, Calendar.JUNE, 2001),
date(2, Calendar.JUNE, 2001))));
s1.add(new Task("Alpha Implementation",
new SimpleTimePeriod(date(3, Calendar.JUNE, 2001),
date(31, Calendar.JULY, 2001))));
s1.add(new Task("Design Review",
new SimpleTimePeriod(date(1, Calendar.AUGUST, 2001),
date(8, Calendar.AUGUST, 2001))));
s1.add(new Task("Revised Design Signoff",
new SimpleTimePeriod(date(10, Calendar.AUGUST, 2001),
date(10, Calendar.AUGUST, 2001))));
s1.add(new Task("Beta Implementation",
new SimpleTimePeriod(date(12, Calendar.AUGUST, 2001),
date(12, Calendar.SEPTEMBER, 2001))));
s1.add(new Task("Testing",
new SimpleTimePeriod(date(13, Calendar.SEPTEMBER, 2001),
date(31, Calendar.OCTOBER, 2001))));
s1.add(new Task("Final Implementation",
new SimpleTimePeriod(date(1, Calendar.NOVEMBER, 2001),
date(15, Calendar.NOVEMBER, 2001))));
s1.add(new Task("Signoff",
new SimpleTimePeriod(date(28, Calendar.NOVEMBER, 2001),
date(30, Calendar.NOVEMBER, 2001))));
final TaskSeries s2 = new TaskSeries("Actual");
s2.add(new Task("Write Proposal",
new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
date(5, Calendar.APRIL, 2001))));
s2.add(new Task("Obtain Approval",
new SimpleTimePeriod(date(9, Calendar.APRIL, 2001),
date(9, Calendar.APRIL, 2001))));
s2.add(new Task("Requirements Analysis",
new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
date(15, Calendar.MAY, 2001))));
s2.add(new Task("Design Phase",
new SimpleTimePeriod(date(15, Calendar.MAY, 2001),
date(17, Calendar.JUNE, 2001))));
s2.add(new Task("Design Signoff",
new SimpleTimePeriod(date(30, Calendar.JUNE, 2001),
date(30, Calendar.JUNE, 2001))));
s2.add(new Task("Alpha Implementation",
new SimpleTimePeriod(date(1, Calendar.JULY, 2001),
date(12, Calendar.SEPTEMBER, 2001))));
s2.add(new Task("Design Review",
new SimpleTimePeriod(date(12, Calendar.SEPTEMBER, 2001),
date(22, Calendar.SEPTEMBER, 2001))));
s2.add(new Task("Revised Design Signoff",
new SimpleTimePeriod(date(25, Calendar.SEPTEMBER, 2001),
date(27, Calendar.SEPTEMBER, 2001))));
s2.add(new Task("Beta Implementation",
new SimpleTimePeriod(date(27, Calendar.SEPTEMBER, 2001),
date(30, Calendar.OCTOBER, 2001))));
s2.add(new Task("Testing",
new SimpleTimePeriod(date(31, Calendar.OCTOBER, 2001),
date(17, Calendar.NOVEMBER, 2001))));
s2.add(new Task("Final Implementation",
new SimpleTimePeriod(date(18, Calendar.NOVEMBER, 2001),
date(5, Calendar.DECEMBER, 2001))));
s2.add(new Task("Signoff",
new SimpleTimePeriod(date(10, Calendar.DECEMBER, 2001),
date(11, Calendar.DECEMBER, 2001))));
final TaskSeriesCollection collection = new TaskSeriesCollection();
collection.add(s1);
collection.add(s2);
return collection;
}
/**
* Utility method for creating Date objects.
*
* @param day the date.
* @param month the month.
* @param year the year.
*
* @return a date.
*/
private static Date date(final int day, final int month, final int year) {
final Calendar calendar = Calendar.getInstance();
calendar.set(year, month, day);
final Date result = calendar.getTime();
return result;
}
/**
* Creates a chart.
*
* @param dataset the dataset.
*
* @return The chart.
*/
private JFreeChart createChart(final IntervalCategoryDataset dataset) {
final JFreeChart chart = ChartFactory.createGanttChart(
"Gantt Chart Demo", // chart title
"Task", // domain axis label
"Date", // range axis label
dataset, // data
true, // include legend
true, // tooltips
false // urls
);
// chart.getCategoryPlot().getDomainAxis().setMaxCategoryLabelWidthRatio(10.0f);
return chart;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final GanttDemo1 demo = new GanttDemo1("Gantt Chart Demo 1");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
</source>
JFreeChart: Gantt Demo 2 with multiple bars per task
<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.] * * --------------- * GanttDemo2.java * --------------- * (C) Copyright 2003, 2004, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: GanttDemo2.java,v 1.12 2004/04/26 19:11:54 taqua Exp $ * * Changes * ------- * 10-Jan-2003 : Version 1 (based on GanttDemo1) (DG); * 16-Sep-2003 : Transferred dataset creation from DemoDatasetFactory to this class (DG); * */
package org.jfree.chart.demo; import java.awt.Color; import java.util.Calendar; import java.util.Date; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.category.CategoryItemRenderer; import org.jfree.data.category.IntervalCategoryDataset; import org.jfree.data.gantt.Task; import org.jfree.data.gantt.TaskSeries; import org.jfree.data.gantt.TaskSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /**
* A simple demonstration application showing how to create a Gantt chart with multiple bars per * task. * */
public class GanttDemo2 extends ApplicationFrame {
/**
* Creates a new demo.
*
* @param title the frame title.
*/
public GanttDemo2(final String title) {
super(title);
final IntervalCategoryDataset dataset = createSampleDataset();
// create the chart...
final JFreeChart chart = ChartFactory.createGanttChart(
"Gantt Chart Demo", // chart title
"Task", // domain axis label
"Date", // range axis label
dataset, // data
true, // include legend
true, // tooltips
false // urls
);
final CategoryPlot plot = (CategoryPlot) chart.getPlot();
// plot.getDomainAxis().setMaxCategoryLabelWidthRatio(10.0f);
final CategoryItemRenderer renderer = plot.getRenderer();
renderer.setSeriesPaint(0, Color.blue);
// add the chart to a panel...
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.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 sample dataset for a Gantt chart, using sub-tasks. In general, you won"t
* hard-code the dataset in this way - it"s done here so that the demo is self-contained.
*
* @return The dataset.
*/
private IntervalCategoryDataset createSampleDataset() {
final TaskSeries s1 = new TaskSeries("Scheduled");
final Task t1 = new Task(
"Write Proposal", date(1, Calendar.APRIL, 2001), date(5, Calendar.APRIL, 2001)
);
t1.setPercentComplete(1.00);
s1.add(t1);
final Task t2 = new Task(
"Obtain Approval", date(9, Calendar.APRIL, 2001), date(9, Calendar.APRIL, 2001)
);
t2.setPercentComplete(1.00);
s1.add(t2);
// here is a task split into two subtasks...
final Task t3 = new Task(
"Requirements Analysis",
date(10, Calendar.APRIL, 2001), date(5, Calendar.MAY, 2001)
);
final Task st31 = new Task(
"Requirements 1",
date(10, Calendar.APRIL, 2001), date(25, Calendar.APRIL, 2001)
);
st31.setPercentComplete(1.0);
final Task st32 = new Task(
"Requirements 2",
date(1, Calendar.MAY, 2001), date(5, Calendar.MAY, 2001)
);
st32.setPercentComplete(1.0);
t3.addSubtask(st31);
t3.addSubtask(st32);
s1.add(t3);
// and another...
final Task t4 = new Task(
"Design Phase",
date(6, Calendar.MAY, 2001), date(30, Calendar.MAY, 2001)
);
final Task st41 = new Task(
"Design 1",
date(6, Calendar.MAY, 2001), date(10, Calendar.MAY, 2001)
);
st41.setPercentComplete(1.0);
final Task st42 = new Task(
"Design 2",
date(15, Calendar.MAY, 2001), date(20, Calendar.MAY, 2001)
);
st42.setPercentComplete(1.0);
final Task st43 = new Task(
"Design 3",
date(23, Calendar.MAY, 2001), date(30, Calendar.MAY, 2001)
);
st43.setPercentComplete(0.50);
t4.addSubtask(st41);
t4.addSubtask(st42);
t4.addSubtask(st43);
s1.add(t4);
final Task t5 = new Task(
"Design Signoff", date(2, Calendar.JUNE, 2001), date(2, Calendar.JUNE, 2001)
);
s1.add(t5);
final Task t6 = new Task(
"Alpha Implementation", date(3, Calendar.JUNE, 2001), date(31, Calendar.JULY, 2001)
);
t6.setPercentComplete(0.60);
s1.add(t6);
final Task t7 = new Task(
"Design Review", date(1, Calendar.AUGUST, 2001), date(8, Calendar.AUGUST, 2001)
);
t7.setPercentComplete(0.0);
s1.add(t7);
final Task t8 = new Task(
"Revised Design Signoff",
date(10, Calendar.AUGUST, 2001), date(10, Calendar.AUGUST, 2001)
);
t8.setPercentComplete(0.0);
s1.add(t8);
final Task t9 = new Task(
"Beta Implementation",
date(12, Calendar.AUGUST, 2001), date(12, Calendar.SEPTEMBER, 2001)
);
t9.setPercentComplete(0.0);
s1.add(t9);
final Task t10 = new Task(
"Testing", date(13, Calendar.SEPTEMBER, 2001), date(31, Calendar.OCTOBER, 2001)
);
t10.setPercentComplete(0.0);
s1.add(t10);
final Task t11 = new Task(
"Final Implementation",
date(1, Calendar.NOVEMBER, 2001), date(15, Calendar.NOVEMBER, 2001)
);
t11.setPercentComplete(0.0);
s1.add(t11);
final Task t12 = new Task(
"Signoff", date(28, Calendar.NOVEMBER, 2001), date(30, Calendar.NOVEMBER, 2001)
);
t12.setPercentComplete(0.0);
s1.add(t12);
final TaskSeriesCollection collection = new TaskSeriesCollection();
collection.add(s1);
return collection;
}
/**
* Utility method for creating Date objects.
*
* @param day the date.
* @param month the month.
* @param year the year.
*
* @return a date.
*/
private static Date date(final int day, final int month, final int year) {
final Calendar calendar = Calendar.getInstance();
calendar.set(year, month, day);
final Date result = calendar.getTime();
return result;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(final String[] args) {
final GanttDemo2 demo = new GanttDemo2("Gantt Chart Demo 2");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
</source>
