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******************************** * JFREECHART: Version 1.0.13 * ******************************** 20 April 2009 (C)opyright 2000-2009, by Object Refinery Limited and Contributors. ----------------- 1. INTRODUCTION ----------------- JFreeChart is a free chart library for the Java(tm) platform. It runs on the Java 2 Platform (JDK 1.3 or later) and uses the Java 2D API for drawing. JFreeChart is licensed under the terms of the GNU Lesser General Public Licence (LGPL). A copy of the licence is included in the distribution. Please note that JFreeChart is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Please refer to the licence for details. We are grateful to the many developers that have contributed to JFreeChart. The contributors are listed below in section 10. ------------------- 2. LATEST VERSION ------------------- The latest version of this class library can be obtained from: http://www.jfree.org/jfreechart/ If you have an comments, suggestions or bugs to report, please post a message in the JFreeChart forum. ----------------- 3. DOCUMENTATION ----------------- You can download installation instructions (jfreechart-1.0.13-install.pdf) from the JFreeChart home page or the project page on SourceForge. Further documentation for JFreeChart (the JFreeChart Developer Guide) is available to purchase from by Object Refinery Limited, a company owned and operated by David Gilbert (the original author of JFreeChart). For more information, please see: http://www.object-refinery.com/jfreechart/guide.html Sales of the JFreeChart Developer Guide are an important source of funding for the project. Please help us to continue developing free software. API documentation files in HTML format are available on-line. If you wish to keep a local copy of the API files, you can regenerate them directly from the source code. You can do this using the 'javadoc' or 'gjdoc' utilities directly, or with the Ant script (build.xml) included in the distribution. ----------------- 4. DEPENDENCIES ----------------- JFreeChart has the following dependencies: (a) JDK 1.3.1 or higher - JFreeChart requires the Java2D and Collections APIs, so it definitely won't work with JDK 1.1 (with a small amount of effort you can probably get it to compile and run with JDK 1.2). If you are using JFreeChart to create applets, this means that you cannot rely on the JVM integrated with Microsoft's Internet Explorer - your users will need to have the Java 2 plug-in installed. Most other browsers (e.g. Firefox, Mozilla, Netscape, Konqueror) support JRE 1.4, 1.5 or 1.6. (b) JCommon - version 1.0.0 or later. The runtime jar file (version 1.0.16) is included in the JFreeChart distribution. You can obtain the complete source code for JCommon from: http://www.jfree.org/jcommon/ JCommon is licensed under the terms of the GNU Lesser General Public Licence. (c) GNU JAXP (JDK 1.3 only) - a free implementation of the standard XML processing APIs for Java. http://www.gnu.org/software/classpathx/jaxp/ Classes in the org.jfree.data.xml package require this library, or another JAXP v1.1 compliant parser. The gnujaxp.jar file (from the gnujaxp-1.0beta1.zip distribution) is included with JFreeChart. GNU JAXP is licensed under the terms of the GNU General Public License with an additional library exception. THIS LIBRARY IS ONLY REQUIRED BY JFREECHART IF YOU ARE USING JDK 1.3. (d) servlet.jar - classes in the org.jfree.chart.servlet package require this file. The JFreeChart distribution includes the servlet.jar file distributed with Tomcat 4.1.31. Applicable license terms are published at: http://java.sun.com/products/servlet/LICENSE (e) JUnit - a unit testing framework (the junit.jar runtime file is included in the distribution). JUnit is licensed under the terms of the IBM Common Public License. You can find out more about JUnit and/or download the latest version from: http://www.junit.org The JUnit tests included with JFreeChart have been created using JUnit 4.3.1. ----------- 5. SUPPORT ----------- Support questions can be posted in the free support forum at http://www.jfree.org/phpBB2/viewforum.php?f=3 We read all questions posted in the forum, and respond to as many as we can in the time available. Unfortunately, there are too many questions to answer them all. Priority support is offered (in a separate forum at www.object-refinery.com) to companies and institutions that have purchased a site licence for the JFreeChart Developer Guide. -------------------- 6. ANT BUILD SCRIPT -------------------- An Ant build script (build.xml) is included in the distribution. This is the same script that is used to create the JFreeChart distribution. For more information about Ant: http://ant.apache.org/ If you want to rebuild the JFreeChart jar file, we highly recommend that you use this script as it includes certain files (for example, .properties files) that you MUST have in the jar file for JFreeChart to function correctly. ------------------------ 7. THE DEMO APPLICATION ------------------------ A demo application that shows a selection of the charts that can be generated is included in the JFreeChart distribution. To run the demo (using JDK 1.3.1 or later), use the following command: java -jar jfreechart-1.0.13-demo.jar The complete source code for the demo application is available for download when you purchase the JFreeChart Developer Guide. The demo application uses iText, a library for creating PDF documents. iText is licensed under the terms of the GNU Lesser General Public Licence and is available to download from: http://www.lowagie.com/iText/ --------------- 8. LIMITATIONS --------------- JFreeChart has some known limitations that will hopefully be addressed in the future: - some renderers do not respect the series visibility flags yet; - the chart property editors (accessible by right-clicking on the chart panel) are horribly out of date and probably shouldn't be used; - item labels (if displayed) are not taken into account for the automatically calculated axis range. As a workaround, you can increase the axis margins; - tick labels on a DateAxis that uses a SegmentedTimeline can be problematic; - there is no support for writing charts to JPEG format on JDK 1.3. JPEG is not a good format for charts in any case, and it is usually better to use PNG format; - copying charts to the clipboard (supported by the ChartPanel class) will not work if you are running on a very old version of the Java runtime (version 1.3.1). If there are other items that you think should be listed here, please post a bug report. -------------- 9. WHAT's NEW -------------- A list of changes in recent versions: 1.0.13 : (17-Apr-2009) - there are some significant new features in this release, as well as performance enhancements and bug fixes - see the NEWS and ChangeLog files for details. 1.0.12 : (31-Dec-2008) - added support for minor tick marks, mapping datasets to more than one axis, and numerous bug fixes - see the NEWS and ChangeLog files for details. 1.0.11 : (18-Sep-2008) - this release includes a new chart theming mechanism, and numerous other feature enhancements and bug fixes - see the NEWS and ChangeLog files for details. 1.0.10 : (8-Jun-2008) - another general maintenance release - see the NEWS and ChangeLog files for more details. 1.0.9 : (4-Jan-2008) - this release fixes a security advisory with respect to the HTML image maps generated by JFreeChart - see the NEWS file for more information. In addition, a number of bugs have been fixed. 1.0.8 : (23-Nov-2007) - primarily a bug fix release. See the NEWS and ChangeLog files for a more detailed description of the changes in this release. 1.0.7 : (14-Nov-2007) - See the NEWS and ChangeLog files for a more detailed description of the changes in this release. 1.0.6 : (15-Jun-2007) - the VectorRenderer and associated dataset classes have been promoted to the standard API from the 'experimental' source tree. See the NEWS and ChangeLog files for a more detailed description of the changes in this release. 1.0.5 : (23-Mar-2007) - this release contains a new DeviationRenderer, enhancements to a number of existing classes and numerous bug fixes, see the NEWS and ChangeLog files for details. 1.0.4 : (9-Feb-2007) - this release contains both new features and bug fixes, see the NEWS and ChangeLog files for details. 1.0.3 : (17-Nov-2006) - this release contains a new DialPlot class (in 'experimental') that will hopefully replace the MeterPlot class, once the API has been polished a little, plus many other new features and bug fixes. See the NEWS and ChangeLog files for details. 1.0.2 : (25-Aug-2006) - this release contains both new features and bug fixes, see the NEWS and ChangeLog files for details. 1.0.1 : (27-Jan-2006) - primarily a bug fix release, see the NEWS and ChangeLog files for details. 1.0.0 : (2-Dec-2005) - the first stable release of the JFreeChart class library, all future releases in the 1.0.x series will aim to maintain backward compatibility with this release; - see the ChangeLog file for a detailed list of changes. 1.0.0-rc3 : (28-Nov-2005) - the third "release candidate" for version 1.0.0, this release fixes some issues with the 1.0.0-rc2 release (mainly concerning packaging of resource bundles for localisation). - if no significant problems are reported in the next few days, the 1.0.0 "final" release will be posted on 2-Dec-2005. 1.0.0-rc2 : (25-Nov-2005) - the second "release candidate" for version 1.0.0. If no problems are reported, 1.0.0 "final" will be released on 2-Dec-2005. - see the ChangeLog file for a detailed list of changes in this release. 1.0.0-rc1 : (2-Jun-2005) - this is a "release candidate" for version 1.0.0. If no significant API problems are reported, this release will be re-released as version 1.0.0. - see CHANGELOG.txt for further details. 1.0.0-pre2 : (10-Mar-2005) - see CHANGELOG.txt for further details. 1.0.0-pre1 : (29-Nov-2004) - see CHANGELOG.txt for further details. 0.9.21 : (9-Sep-2004) - added new axes: PeriodAxis and ModuloAxis. - split org.jfree.data and org.jfree.chart.renderer into subpackages for 'category' and 'xy' charts. - Sun PNG encoder is now used, if available. - a new demo application makes it easier to preview the chart types that JFreeChart can create. - added a new series visibility flag to the AbstractRenderer class. - added support for GradientPaint in interval markers. - see CHANGELOG.txt for further details. 0.9.20 : (7-Jun-2004) - primarily bug fixes, see CHANGELOG.txt for further details. 0.9.19 : (28-May-2004) - added methods to XYDataset that return double primitives; - removed distinction between "primary" and "secondary" datasets, renderers and axes; - added fixed legend item options to CategoryPlot and XYPlot; - legend changes by Barek Naveh; - removed Log4j dependency; - many, many bug fixes; - see CHANGELOG.txt for further details. 0.9.18 : (15-Apr-2004) - new legend anchor options; - fixed broken JPEG export; - fixed title size problems; - various other bug fixes; 0.9.17 : (26-Mar-2004) - pie chart enhancements for labelling, shading and multiple pie charts (2D or 3D) on a single plot; - new PolarPlot class added; - XYSeries can now be sorted or unsorted; - createBufferedImage() method can now scale charts; - domain and range markers now support intervals; - item labels are now supported by some XYItemRenderers; - tooltip and item label generators now use MessageFormat class; - added new XYBarDataset class; - added transparency support to PNG export; - numerous other small enhancements and bug fixes, see the CHANGELOG.txt file for more details; 0.9.16 : (09-Jan-2004) - this release contains bug fixes and some minor feature enhancements (title and category label wrapping, legend shape scaling, enhanced performance for the DefaultTableXYDataset class); - added Spanish localisation files; 0.9.15 : (28-Nov-2003) - the focus of this release is bug fixes - quite a number of issues have been resolved, please check the bug database for details; - added a new Wafer Map chart type; - added a cyclic axis; - added localisation files for _ru; 0.9.14 : (17-Nov-2003) - implemented zooming for the FastScatterPlot class; - added item label support for stacked bar charts, and new fall back options for item labels that don't fit within bars; - modified the CategoryAxis class to allow additional options for the alignment and rotation of category labels; - addition of the AxisState class, used in the drawing of axes to eliminate a bug when multiple threads draw the same axis simultaneously; - provided additional attributes in the DateTickUnit class to improve labelling on a segmented DateAxis; - added support for GradientPaint in bar charts; - updated the PNGEncoder; - fixes for tick label positioning on axes; - various Javadoc updates; - numerous bug fixes; 0.9.13 : (26-Sep-2003) - various enhancements to the stacked area XY charts; - added a completion indicator for the Gantt chart; - range and domain markers can now be placed in the foreground or the background; - more fixes for cloning and serialization; - fixed mouse event bug for combined charts; - fixed bugs in the PngEncoder class; - incorporated .properties files that were missing from the 0.9.12 distribution; 0.9.12 : (11-Sep-2003) - extended box-and-whisker plots to work with the CategoryPlot class as well as the XYPlot class (based on work by David Browning); - added a new LayeredBarRenderer (by Arnaud Lelievre); - added support for stacked area charts with the XYPlot class (thanks to Richard Atkinson); - improved HTML image map support (thanks to Richard Atkinson); - added localized resources for the chart property editors (thanks to Arnaud Lelievre). Current translations include French and Portugese (thanks to Eduardo Ramalho); - added facility for setting all rendering hints; - improved support for cloning and serialization; - fixed a bug in the XYSeries class that prevented the TableXYDataset from functioning correctly; - improved date axis labelling with segmented time lines; - fixed several bugs in the secondary dataset/axis/renderer code; - fixed bugs in the JDBCCategoryDataset class; - numerous other bug fixes; 0.9.11 : (8-Aug-2003) - added support for box-and-whisker plots, thanks to David Browning; - lots of bug fixes; API changes in this release are minimal and have been implemented using deprecation, so code written against 0.9.10 should recompile. 0.9.10 : (25-Jul-2003) - added support for multiple secondary axes, datasets and renderers; - minor feature enhancements and bug fixes; 0.9.9 : (10-Jul-2003) PLEASE NOTE THAT MAJOR CHANGES HAVE BEEN MADE IN THIS RELEASE AND ONE OR TWO FEATURES MAY BE BROKEN. PLEASE REPORT BUGS SO THEY CAN BE FIXED FOR THE NEXT RELEASE. - merged the HorizontalCategoryPlot and VerticalCategoryPlot classes, into the CategoryPlot class; - merged the horizontal and vertical axis classes; - merged the horizontal and vertical renderer classes; - CategoryPlot and XYPlot now support both horizontal and vertical orientation via the setOrientation(...) method; - merged horizontal and vertical methods in the ChartFactory class; - created new combined plot classes: CombinedDomainCategoryPlot, CombinedRangeCategoryPlot, CombinedDomainXYPlot and CombinedRangeXYPlot (these can all be drawn with a horizontal or vertical orientation); - Bill Kelemen has enhanced the DateAxis class to handle segmented timelines. This can be used, for example, to skip weekends for daily stock price charts; - Richard Atkinson has updated the ServletUtilities class; - Bryan Scott has added an XYDatasetTableModel class for presenting datasets in a JTable; - modified XYPlot to allow renderers to use multiple passes through the dataset; - added new XYDifferenceRenderer; - added support for colored bands between gridlines in XYPlot; - added new XYDrawableAnnotation class; - added a new attribute to control the order of dataset rendering in a CategoryPlot; - extended the value label mechanism for the renderers, to allow better (per series) control over label generation, positioning and visibility; - CategoryItemTooltipGenerator has been renamed CategoryItemLabelGenerator, since it is now being used to generated item labels as well as tooltips; - there is now support for horizontal stacked 3D bar charts; - added support for range markers against secondary axis in a CategoryPlot; - added labels to domain and range markers; - added a new HistogramDataset class (contributed by Jelai Wang) to make it easier to create histograms with JFreeChart; - moved the DrawingSupplier into the plot class, renderers now reference the supplier from the plot (parent plot for combined and overlaid charts). This means that renderers now share a single DrawingSupplier by default, which simplifies the creation of combined charts; - changed the ColorBarAxis classes that extended the NumberAxis class, to a single ColorBar class that wraps a ValueAxis (may have broken one or two things in the process); - Barak Naveh has contributed new classes MatrixSeries and MatrixSeriesCollection, along with demos: BubblyBubblesDemo.java and BubblyBubblesDemo2.java; - the TextTitle class now has a background paint attribute; - the StandardLegend class now generates LegendEntity objects if a ChartRenderingInfo instance is supplied to the draw(...) method; - extended the CategoryTextAnnotation class to take into account a category anchor point. See the SurveyResultsDemo.java application for an example; - included numerous bug fixes; 0.9.8 : (24-Apr-2003) - changed package naming from com.jrefinery.* to org.jfree.*; - added new TimePeriodValuesCollection class; - added MIME type code to ServletUtilities class; - reversed the order of PieDataset and KeyedValuesDataset in the class hierarchy; - reversed the order of CategoryDataset and KeyedValues2DDataset in the class hierarchy; - minor bug fixes; 0.9.7 : (11-Apr-2003) - added a new ValueDataset interface and DefaultValueDataset class, and changed the CompassPlot class to use this instead of MeterDataset; - added DataUtilities class, to support creation of Pareto charts (new demo included); - updated writeImageMap method as suggested by Xavier Poinsard (see Feature Request 688079); - implemented Serializable for most classes (this is likely to require further testing); - incorporated contour plot updates from David M. O'Donnell; - added new CategoryTextAnnotation and XYLineAnnotation classes; - added new HorizontalCategoryAxis3D class contributed by Klaus Rheinwald; Bug fixes: - added a workaround for JVM crash (a JDK bug) in pie charts with small sections (see bug report 620031); - fixed minor bug in HorizontalCategoryPlot constructor (see bug report 702248); - added code to ensure HorizontalNumberAxis3D is not drawn if it is not visible (see bug report 702466); - added small fix for suppressed chart change events (see bug report 690865); - added pieIndex parameter to tooltip and URL generators for pie charts; - fixed bug in getLastMillisecond() method for the Second class and the getFirstMillisecond() method for the Year class (picked up in JUnit tests); - in TextTitle, changed width used for relative spacing to fix bug 703050; 0.9.6 : (17-Feb-2003) Bug fixes: - fixed null pointer exception in DefaultCategoryDataset; - fixed update problem for PaintTable, StrokeTable and ShapeTable objects; - added methods to control colors in PiePlot (these were inadvertantly removed in the changes made for 0.9.5); - fixed auto-range update problem for secondary axis; - fixed missing category labels in the overlaid category plot; - fixed constructors for symbolic axes; - corrected error in Javadoc generation (Ant script); 0.9.5 : (6-Feb-2003) PLEASE NOTE THAT MAJOR CHANGES TO THE JFREECHART API HAVE BEEN MADE IN THIS RELEASE! - added support for secondary axes, datasets and renderers; - added new data interfaces (Value, Values, Values2D, KeyedValues and KeyedValues2D) and incorporated these into the existing PieDataset and CategoryDataset interfaces. - modified the CategoryDataset interface to be more symmetrical, data is organised in rows and columns (as before) but can now be accessed by row/column index or row/column key. - added support for reading PieDatasets and CategoryDatasets from XML files. - created separate packages for the axes (com.jrefinery.chart.axis), plots (com.jrefinery.chart.plot) and renderers (com.jrefinery.chart.renderer). - series attributes (paint, outline paint, stroke and shape) are now controlled by the renderer classes using lookup tables. Introduced the DrawingSupplier interface (and DefaultDrawingSupplier class) which is used to populate the lookup tables from a common source (necessary to coordinate complex combined charts). - the chart legend can now display shapes corresponding to series. - moved responsibility for category distribution to the CategoryAxis class, which tidies up the code in the CategoryPlot classes. - gridlines are now controlled by the CategoryPlot and XYPlot classes, not the axes (included in this change is the addition of gridlines for the CategoryPlot domain values). - changed the list of titles in the JFreeChart class to a title and a list of subtitles. - added new renderers for XYPlot (XYBubbleRenderer and YIntervalRenderer). - modified Gantt chart to display sub-tasks. - added ContourPlot class (still experimental) by David M. O'Donnell. - introduced new MovingAverage class. - ChartMouseEvent now includes source chart. - numerous bug fixes. - lots of Javadoc updates. 0.9.4 : (18-Oct-2002) Added a new stacked area chart (contributed by Dan Rivett) and a compass plot (contributed by Bryan Scott). Updated the ThermometerPlot class. Added a new XYDotRenderer for scatter plots. Modified combined and overlaid plots to use the series colors specified in the sub plot rather than the parent plot (this makes it easier to align the colors in the legend). Added Regression class for linear and power regressions. BasicTimeSeries can now automatically drop "old" data. Some clean-up work in the code for tooltips and the event listener mechanism. Richard Atkinson has incorporated some useful extensions for servlets/JSP developers. Ran Checkstyle and corrected issues reported for most classes. Checkstyle is a free utility that you can download from: http://checkstyle.sourceforge.net Fixed bugs and updated documentation. API changes include: - added tickMarkPaint to Axis constructor (also affects subclasses); - added getLegendItems() to Plot, and deprecated getLegendItemLabels(); - added getLegendItem(int) to XYItemRenderer and CategoryItemRenderer. - most 'protected' member variables have been changed to 'private'. 0.9.3 : (4-Sep-2002) Added multiple pie charts based on CategoryDataset. Updated logarithmic axes. Improved URL support for image map generation. Moved the com.jrefinery.data package from JCommon to JFreeChart. Added simple framework for chart annotations. Improved control over renderers. Duplicate x-values now allowed in XYSeries. Optional category label skipping in category axes. Added CategoriesPaint attribute to AbstractCategoryItemRenderer. Added new attributes to MeterPlot class. Updated 3D pie chart to observe start angle and direction, and also foreground alpha < 1.0. Improved Javadoc comments. New demo applications, including: AnnotationDemo1, EventFrequencyDemo, JDBCCategoryChartDemo, JDBCPieChartDemo, JDBCXYChartDemo and MinMaxCategoryPlotDemo. Bug fixes: - negative percentages on PiePlot. - added listener notification to setXXXAxis(...) methods. - fixed DomainInfo method name clash. - added DomainIsPointsInTime flag to TimeSeriesCollection to give better control over auto range on axis for time series charts. - axis margins for date axes are no longer hard-coded. - fix for ordering of categories in JdbcCategoryDataset. - added check for null axis in mouse click handler. The CVS repository at SourceForge has also been restructured to match the distribution directory layout. 0.9.2 : (28-Jun-2002) PiePlot now has startAngle and direction attributes. Added support for image map generation. Added a new Pie3DPlot class. Added label drawing code to bar renderers. Added optional range markers to horizontal number axis. Added bar clipping to avoid PRExceptions in bar charts. JFreeChartDemo has been modified and now includes examples of the dial and thermometer plots. Bug fixes: - auto range for VerticalNumberAxis when zero is forced to be included in the range. - fixed null pointer exception in StackedVerticalBarRenderer3D; - Added get/set methods for min/max chart drawing dimensions in ChartPanel; - HorizontalIntervalBarRenderer now handles single category; - verticalTickLabels now possible in HorizontalNumberAxis3D; - removed unnecessary imports; 0.9.1 : (14-Jun-2002) Bug fixes and Javadoc updates. - fixed auto range calculation for category plots; - fixed event notification for XYPlot; - fixed auto axis range for Gantt charts; - check for null popup menu in ChartPanel.mouseDragged; - new checks for null info in renderers; - range markers now drawn only if in visible axis range; 0.9.0 : (7-Jun-2002) New plots including an area chart, a horizontal 3D bar chart, a Gantt chart and a thermometer chart. Combination plots have been reworked to provide a simpler framework, and extends to allow category plots to be combined. There is now a facility to add a ChartMouseListener to the ChartPanel (formerly JFreeChartPanel). An interactive zooming feature (experimental at this point) is now available for XYPlots. A new Polish translation has been added. Several fixes have been applied to the default tool tip generators. A workaround has been added to fix the alignment between time series charts and the date axis. There are some improvements to the VerticalLogarithmicAxis class, and now a corresponding HorizontalLogarithmicAxis class. Additional demonstration applications have been added. Fixed the popup menu bug. 0.8.1 : (5-Apr-2002) Localised resource bundles for French, German and Spanish languages (thanks to Anthony Boulestreau, Thomas Meier and Hans-Jurgen Greiner for the translations). An area XY plot and meter chart contributed by Hari. Symbol charts contributed by Anthony Boulestreau. An improved CandleStickRenderer class from Sylvain Vieujot. Updated servlet code from Bryan Scott. XYItemRenderers now have a change listener mechanism and therefore do not have to be immutable. Additional demonstration applications for individual chart types. Minor bug fixes. 0.8.0 : (22-Mar-2002) All the category plots are now controlled through the one class (CategoryPlot) with plug-in renderers. Added a ResourceBundle for user interface items that require localisation. Added a logarithmic axis class contributed by Mike Duffy and some new JDBC and servlet code contributed by Bryan Scott. Updated the JCommon class library to improve handling of time periods in different time zones. 0.7.4 : (6-Mar-2002) Bug fixes in the JCommon Class Library. Various Javadoc comment updates. Some minor changes to the code. Added new domain name (http://www.object-refinery.com) in the source headers. 0.7.3 : (14-Feb-2002) Bug fixes. 0.7.2 : (8-Feb-2002) Integrated the WindPlot code from Achilleus Mantzios. Added an optional background image for the JFreeChart class, and another optional background image for the Plot class. Added alpha-transparency for the plot foreground and background. Added new pie chart label types that show values. Fixed a bug with the legend that results in a loop at small chart sizes. Added some tooltip methods that were missing from the previous version. Changed the Insets class on chart titles to a new Spacer class that will allow for relative or absolute insets (the plan is to eventually replace all Insets in the JFreeChart classes). Fixed a bug in the setAutoRangeIncludesZero method of the NumberAxis class. Added the instructions that were missing from the copies of the GNU Lesser General Public Licence included with JFreeChart. 0.7.1 : (25-Jan-2002) Added tooltips, crosshairs and zooming functions, thanks to Jonathan Nash and Hans-Jurgen Greiner for contributing the code that these features are based on. Moved the combination charts into the package com.jrefinery.chart.combination, made a number of other small API changes and fixed some bugs. Removed the Javadoc HTML from the download to save space (you can regenerate it from the source code if you need it). 0.7.0 : (11-Dec-2001) New combination plots developed by Bill Kelemen. Added Wolfgang Irler's servlet demo to the standard download. The About window in the demo application now includes a list of developers that have contributed to the project. 0.6.0 : (27-Nov-2001) New plots including scatter plot, stacked bar charts and 3D bar charts. Improved pie chart. Data interfaces and classes moved to the JCommon class library. New properties to control spacing on bar charts. New auto-tick mechanism. JFreeChartPanel now incorporates buffering, and popup menu. Javadocs revised. Fixed numerous bugs from version 0.5.6. Demo application updated. ---------------- 10. CONTRIBUTORS ---------------- JFreeChart wouldn't be half the library that it is today without the contributions (large and small) that have been made by the developers listed below: - Eric Alexander - Richard Atkinson - David Basten - David Berry - Chris Boek - Zoheb Borbora - Anthony Boulestreau - Jeremy Bowman - Nicolas Brodu - Jody Brownell - David Browning - Soren Caspersen - Chuanhao Chiu - Brian Cole - Pascal Collet - Martin Cordova - Paolo Cova - Greg Darke - Mike Duffy - Don Elliott - Rune Fauske - Jonathan Gabbai - Serge V. Grachov - Daniel Gredler - Joao Guilherme Del Valle - Hans-Jurgen Greiner - Nick Guenther - Aiman Han - Cameron Hayne - Jon Iles - Wolfgang Irler - Sergei Ivanov - Adriaan Joubert - Darren Jung - Xun Kang - Bill Kelemen - Norbert Kiesel - Gideon Krause - Pierre-Marie Le Biot - Arnaud Lelievre - Wolfgang Lenhard - David Li - Yan Liu - Tin Luu - Craig MacFarlane - Achilleus Mantzios - Thomas Meier - Jim Moore - Jonathan Nash - Barak Naveh - David M. O'Donnell - Krzysztof Paz - Eric Penfold - Tomer Peretz - Xavier Poinsard - Andrzej Porebski - Viktor Rajewski - Eduardo Ramalho - Michael Rauch - Cameron Riley - Klaus Rheinwald - Dan Rivett - Scott Sams - Michel Santos - Thierry Saura - Andreas Schneider - Jean-Luc SCHWAB - Bryan Scott - Tobias Selb - Darshan Shah - Mofeed Shahin - Michael Siemer - Pady Srinivasan - Greg Steckman - Roger Studner - Gerald Struck - Irv Thomae - Eric Thomas - Rich Unger - Daniel van Enckevort - Laurence Vanhelsuwe - Sylvain Vieujot - Jelai Wang - Mark Watson - Alex Weber - Richard West - Matthew Wright - Benoit Xhenseval - Christian W. Zuckschwerdt - Hari - Sam (oldman) It is possible that I have missed someone on this list, if that applies to you, please e-mail me. Dave Gilbert (email@example.com) JFreeChart Project Leader