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JFreeChart
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==========
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Version 1.5.0, 5 November 2017.
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[![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.jfree/jfreechart/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.jfree/jfreechart)
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Overview
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--------
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JFreeChart is a comprehensive free chart library for the Java(tm) platform that 
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can be used on the client-side (JavaFX and Swing) or the server side (with
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export to multiple formats including SVG, PNG and PDF).
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![JFreeChart sample](http://jfree.org/jfreechart/images/coffee_prices.png)
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The home page for the project is:
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http://www.jfree.org/jfreechart
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JFreeChart requires JDK 1.6.0 or later.  If JavaFX support is required, you
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need to also include the JFreeChart-FX extensions:
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https://github.com/jfree/jfreechart-fx
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The library is licensed under the terms of the GNU Lesser General Public 
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License (LGPL) version 2.1 or later.
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Using JFreeChart
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----------------
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To use JFreeChart in your projects, add the following dependency to your build tool:
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    <dependency>
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        <groupId>org.jfree</groupId>
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        <artifactId>jfreechart</artifactId>
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        <version>1.5.0</version>
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    </dependency>
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Building JFreeChart
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-------------------
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You can build JFreeChart using Maven by issuing the following command from the root directory of the project:
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    mvn clean install
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The build requires JDK 1.6.0 or later.
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Migration from JFreeChart 1.0.x
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-------------------------------
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When migrating from JFreeChart 1.0.x to JFreeChart 1.5.0, please be aware of the following API changes:
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* all the classes from JCommon that are used by JFreeChart have integrated within the JFreeChart jar file within a different package than before (you will need to change your imports);
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* many methods `getBaseXXX()/setBaseXXX()` have been renamed `setDefaultXXX()/getDefaultXXX()`;
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* the `ChartUtilities` class has been renamed `ChartUtils`;
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* all the classes relating to pseudo-3D charts have been removed, as much better 3D charts are offered by [Orson Charts](https://github.com/jfree/orson-charts) so we prefer not to maintain the pseudo-3D chart code within JFreeChart;
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* the `SegmentedTimeline` class has been removed due to being (a) complex, (b) not always being correct and, as a result, generating too many support requests;
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* the `org.jfree.chart.utils.ParamChecks` class has been renamed `org.jfree.chart.utils.Args`.
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Please refer to [Issue 66](https://github.com/jfree/jfreechart/issues/66) for additional info.
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Demos
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-----
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A small set of demo applications can be found in the following projects here
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at GitHub:
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* [JFree-Demos](https://github.com/jfree/jfree-demos "JFree-Demos Project Page at GitHub")
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* [JFree-FXDemos](https://github.com/jfree/jfree-fxdemos "JFree-FXDemos Project Page at GitHub")
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History
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-------
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##### Version 1.5.0 (5 November 2017)
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- all JavaFX classes moved to a separate project;
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- added cleaner method to create histograms in `ChartFactory`;
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- JCommon removed as a dependency, and required classes incorporated directly (including package rename);
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- pull request #4 improvements to `XYStepRenderer`;
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- bug #36 fix for crosshairs with multiple datasets / axes;
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- bug #25 fix for `DateAxis.previousStandardDate()` method;
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- bug #19 fix for default time zone in `SegmentedDateAxis`;
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- SourceForge #1147 improve performance of `CategoryPlot` mapping datasets to axes;
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- moved SWT code out into separate projects;
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- moved demo programs to a separate project;
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- dropped the Ant build;
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##### Version 1.0.19 (31-Jul-2014)
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- fixed clipping issues for combined plots in JavaFX;
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- fixed a memory leak in the new JavaFX `ChartCanvas` class;
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- `CombinedDomainXYPlot` and `CombinedRangeXYPlot` now take into account the pannable flags in the subplots;
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- `FastScatterPlot` panning direction is corrected;
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- added rendering hints to sharpen gridlines and borders in most output formats;        
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- JFreeSVG updated to version 2.0;
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- included a preview of JSFreeChart, a 2D chart library written in JavaScript that is conceptually similar to JFreeChart but runs directly in a web browser.
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##### Version 1.0.18 (3-Jul-2014)
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- added JavaFX support via `FXGraphics2D`;
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- improved `LogAxis` labelling;
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- improved numeric tick labelling;
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- center text support in `RingPlot`;
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- `stepPoint` attribute in the `XYStepAreaRenderer`;
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- other minor improvements and bug fixes.
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##### Version 1.0.17 (22-Nov-2013)
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- Enhanced `XYSplineRenderer` with new area fill (contributed by Klaus Rheinwald);
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- added a notify flag to all datasets that extend `AbstractDataset`;
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- extended `TimeSeriesCollection` to validate `TimeSeries` keys for uniqueness;
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- added a new `DirectionalGradientPaintTransformer` (by Peter Kolb);
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- updated `OHLCSeries`;
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- added `HMSNumberFormat`;
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- updated JCommon to version 1.0.21 (includes rotated text improvements) and fixed some minor bugs.
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###### Bug Fixes
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- 977  : Multithreading issue with `DateAxis`;
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- 1084 : `BorderArrangement.add()` possible `ClassCastException`;
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- 1099 : `XYSeriesCollection.removeSeries(int)` does not deregister listener;
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- 1109 : `WaterfallBarRenderer` uses wrong color for diff 0.
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##### Version 1.0.16 (13-Sep-2013)
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*** THIS RELEASE REQUIRES JDK/JRE 1.6.0 OR LATER. ***
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- Provided subscript/superscript support for axis labels (via `AttributedString`);
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- new axis label positioning options;
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- simplified `ChartFactory` methods;
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- added new methods to `DatasetUtilities` to interpolate y-values in `XYDatasets`;
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- added URLs to labels on `CategoryAxis`;
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- seamless integration with JFreeSVG (http://www.jfree.org/jfreesvg/) and OrsonPDF 
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(http://www.object-refinery.com/pdf/);
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- improved the consistency of the `SWTGraphics2D` implementation;  
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All the JUnit tests have been upgraded to JUnit 4.
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###### Bug Fixes
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- 1107 : Fixed TimeZone issue in `PeriodAxis`;
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Also fixed a line drawing issue with the `StackedXYAreaRenderer`, and a memory 
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leak in the SWT `ChartComposite` class.
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##### Version 1.0.15 (4-Jul-2013)
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- Added support for non-visible series in `XYBarRenderer`;
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- minor gridlines in `PolarPlot`;
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- legend item ordering;
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- chart editor enhancements;
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- updates to `StandardDialScale`;
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- localisation files for Japanese;
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- refactored parameter checks.  
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This release also fixes a minor security flaw in the `DisplayChart` class, detected and reported by OSI Security:
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http://www.osisecurity.com.au/advisories/jfreechart-path-disclosure
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###### Patches
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- 3500621 : `LegendTitle` order attribute (by Simon Kaczor);
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- 3463807 : `ChartComposite` does not dispose popup (by Sebastiao Correia);
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- 3204823 : `PaintAlpha` for 3D effects (by Dave Law);
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###### Bug Fixes
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- 3561093 : Rendering anomaly for `XYPlots`;
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- 3555275 : `ValueAxis.reserveSpace()` problem for axes with fixed dimension;
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- 3521736 : `DeviationRenderer` optimisation (by Milan Ramaiya);
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- 3514487 : `SWTGraphics2D` `get/setStroke()` problem;
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- 3508799 : `DefaultPolarItemRenderer` does not populate `seriesKey` in `LegendItem`;
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- 3482106 : Missing text in `SWTGraphics2D` (by Kevin Xu);
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- 3484408 : Maven fixes (Martin Hoeller);
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- 3484403 : `DateAxis` endless loop (by Martin Hoeller);
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- 3446965 : `TimeSeries` calculates range incorrectly in `addOrUpdate()`;
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- 3445507 : `TimeSeriesCollection.findRangeBounds()` regression;
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- 3425881 : `XYDifferenceRenderer` fix (by Patrick Schlott/Christoph Schroeder);
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- 2963199 : SWT print job (by Jonas R├╝ttimann);
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- 2879650 : Path disclosure vulnerability in `DisplayChart` servlet;
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Also fixed a rendering issue for polar charts using an inverted axis.
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##### Version 1.0.14 (20-Nov-2011)
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This release contains:
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- support for multiple and logarithmic axes with `PolarPlot`;
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- optional drop-shadows in plot rendering;
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- fitting polynomial functions to a data series;
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- some performance improvements in the `TimeSeriesCollection` class;
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- mouse wheel rotation of pie charts;
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- improved Maven support.
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###### Patches
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- 3435734 : Fix lines overlapping item labels (by Martin Hoeller);
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- 3421088 : Bugfix for misalignment in `BoxAndWhiskerRenderer`;
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- 2952086 : Enhancement for finding bounds in `XYZDatasets`;
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- 2954302 : `CategoryPointerAnnotation` line calculation;
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- 2902842 : `HistogramDataset.addSeries()` fires change change event (by Thomas A Caswell);
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- 2868608 : Whisker width attribute for `BoxAndWhiskerRenderer` (by Peter Becker);
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- 2868585 : Added `useOutlinePaint` flag for `BoxAndWhiskerRenderer` (by Peter Becker);
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- 2850344 : `PolarPlot` enhancements (by Martin Hoeller);
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- 2795746 : Support for polynomial regression;
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- 2791407 : Fixes for `findRangeBounds()` in various renderers.
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###### Bug Fixes
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- 3440237 : Shadows always visible;
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- 3432721 : `PolarPlot` doesn't work with logarithmic axis;
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- 3433405 : `LineChart3D` - Problem with Item Labels;
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- 3429707 : `LogAxis` endless loop;
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- 3428870 : Missing argument check in `TextAnnotation`;
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- 3418287 : `RelativeDateFormatTest.java` is locale dependent;
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- 3353913 : Localisation fixes for `ChartPanel`, `CompassPlot` and `PiePlot3D`;
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- 3237879 : `RingPlot` should respect `getSectionOutlineVisible()`;
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- 3190615 : Added missing `clear()` method in `CategoryTableXYDataset`;
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- 3165708 : `PolarChartPanel` localisation fix;
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- 3072674 : Bad handling of `NaN` in `DefaultStatisticalCategoryDataset`;
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- 3035289 : `StackedXYBarRenderer` should respect series/item visible flags;
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- 3026341 : Check for null in `getDomain/RangeBounds()` for `XYShapeRenderer`;
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- 2947660 : `AbstractCategoryRenderer` fix null check in `getLegendItems()`;
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- 2946521 : `StandardDialScale` check `majorTickIncrement` argument;
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- 2876406 : `TimeTableXYDataset` should support `Comparable` for series keys;
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- 2868557 : `BoxAndWhiskerRenderer` should fire change event in `setMedianVisible()`;
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- 2849731 : For `IntervalCategoryDataset` and `IntervalXYDataset`, fix `iterateRangeBounds()` in `DatasetUtilities`;
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- 2840132 : `AbstractXYItemRenderer` `drawAnnotations` doesn't set renderer index;
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- 2810220 : Offset problem in `StatisticalBarRenderer`;
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- 2802014 : Dial value border too small;
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- 2781844 : `XYPointerAnnotation` arrow drawing;
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- 1937486 : `AreaRenderer` doesn't respect `AreaRendererEndType.LEVEL`;
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Also fixed:
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- use of simple label offset in `PiePlot`;
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- cached `minY` and `maxY` in `TimeSeries.createCopy()`;
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- scaling issues for charts copied to the clipboard;
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- use of timezone in `TimeTableXYDataset` constructor;
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- duplicate series names in `XYSeriesCollection`;
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- `HistogramDataset` fires a change event in `addSeries()`;
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- check visibility of main chart title before drawing it;
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- fixed serialization of `PowerFunction2D`, `NormalDistributionFunction2D`, and `LineFunction2D`;
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- item label positioning for the `AreaRenderer` class when the plot has an horizontal orientation.
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##### Version 1.0.13 (17-Apr-2009)
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> SPECIAL NOTICE:  There will be a birds-of-a-feather session for JFreeChart at this year's JavaOne conference in San Francisco.  The session is scheduled for 6.45pm to 7.35pm on Wednesday 3 June.                        
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This release contains:
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- updates to the `ChartPanel` class to support copying charts to the clipboard, 
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  panning and mouse-wheel zooming, and an overlay mechanism that supports
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  crosshairs;
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- enhancements to the auto-range calculation for axes, providing the ability
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  to use subranges only and also to skip hidden series;
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- updates for many of the `CategoryItemRenderer` implementations to ensure that
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  they respect the `seriesVisible` flags;
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- an improvement to the `TimeSeries` class so that it is no longer necessary to
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  specify the time period type in the constructor;
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- a new `SamplingXYLineRenderer` for improving the performance of time series
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  charts with large datasets;
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- the `XYSeries/XYSeriesCollection` classes now cache the minimum and maximum
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  data values to improve the performance of charts with large datasets;
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- entities are now created for the chart, data area and axes, allowing mouse
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  clicks to be detected for these regions;
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- added a bar alignment factor to the `XYBarRenderer` class;
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- a new `errorIndicatorStroke` field for the `StatisticalLineAndShapeRenderer` and `XYErrorRenderer` classes;
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- added a new `HeatMapDataset` interface, `DefaultHeatMapDataset` implementation,
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  and a `HeatMapUtilities` class to make it easier to create heat map charts;
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- there is a new flag to allow an `XYDataImageAnnotation` to be included in the
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  automatic range calculation for the axes;
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- additional attributes in the `XYTextAnnotation` class;
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- added a `sampleFunction2DToSeries()` method to the `DatasetUtilities` class;
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- some changes to the `ChartPanel` class that help to work around a regression in
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  JRE 1.6.0_10 relating to drawing in XOR mode.  Regarding this final point:
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     * the default value for the `useBuffer` flag has changed to true, which means
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       that all charts will, by default, be rendered into an off-screen image
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       before being displayed in the `ChartPanel`;
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     * the zoom rectangle is drawn using XOR mode *only* when the `useBuffer`
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       flag has been set to false.
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  For most usage, this should improve performance (but at the cost of using more
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  memory for each `ChartPanel` used in your application);
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###### Bug Fixes
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- 2690293 : Problem with Javascript escape characters;
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- 2617557 : `StandardDialScale` ignored `tickLabelPaint`;
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- 2612649 : `Stroke` selection in plot property editor;
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- 2583891 : `SWTGraphics2D.fillPolygon()` not implemented;
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- 2564636 : `Month` constructor ignores Locale;
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- 2502355 : `ChartPanel` sending multiple events;
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- 2490803 : `PeriodAxis.setRange()` method doesn't take into account that the axis
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          displays whole periods;
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In addition, a bug in the `SlidingCategoryDataset` class has been fixed, the
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correct outline paint is now used by `GradientXYBarPainter`, a new method
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has been added to the `ImageMapUtilities` class to escape special characters
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in Javascript strings to avoid problems with the OverLIB and DynamicDrive
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tooltips, and there are some important fixes in the `LogAxis` class.
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This release passes 2110 JUnit tests (0 failures) on JRE 1.6.0_12.
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##### Version 1.0.12 (31-Dec-2008)
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This release adds 
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- support for minor tick marks;
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- mapping datasets to more than one axis;
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- an important fix for the `XYSeries` class (relating to the `addOrUpdate()` method);
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- plus numerous other bug fixes.
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This release passes 1996 JUnit test (0 failures) on JRE 1.6.0_10.
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###### API Adjustments
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- `CategoryPlot` : added `mapDatasetToDomainAxes()` and `mapDatasetToRangeAxes()` methods;
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- `Month` : added a new constructor `Month(Date, TimeZone, Locale)` and deprecated `Month(Date, TimeZone)`;
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- `Quarter` : added a new constructor `Quarter(Date, TimeZone, Locale)` and deprecated `Quarter(Date, TimeZone)`;
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- `XYPlot` : added `mapDatasetToDomainAxes()` and `mapDatasetToRangeAxes()` methods;
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- `Year` : added a new constructor `Year(Date, TimeZone, Locale)` and deprecated `Year(Date, TimeZone)`;
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###### Bug Fixes
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- 2471906 : `XYAreaRenderer` with dashed outline - performance problem;
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- 2452078 : `StackedAreaChart` has gaps;
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- 2275695 : `NullPointerException` for `SubCategoryAxis` on plot with null dataset;
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- 2221495 : `XYLineAnnotation` with dashed stroke;
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- 2216511 : `SWTBarChartDemo1` throws `RuntimeException`;
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- 2201869 : `DateAxis` tick label position error;
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- 2121818 : Label link lines for very thin `RingPlot`;
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- 2113627 : `XYStepRenderer` item labels;
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- 1955483 : `XYSeries.addOrUpdate()` problem.
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Also fixed `StackedXYBarRenderer` which was ignoring the `shadowsVisible` attribute.
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##### Version 1.0.11 (18-Sep-2008)
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This release features:
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- a new chart theming mechanism to allow charts to be restyled conveniently;
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- a new `BarPainter` mechanism to enhance the appearance of bar charts;
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- a new `XYShapeRenderer` class;
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- a scaling facility for the `XYDrawableAnnotation` for drawing images within specific data coordinates;
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- some new classes (`XYTaskDataset`, `XYDataImageAnnotation` and `XYTitleAnnotation`);
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- a modification to the `Year` class to support an extended range; 
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- various bug fixes and API improvements.  
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There is an important bug fix for the `StackedBarRenderer3D` class (see bug 2031407).
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This release passes 1,961 JUnit tests (0 failures) on JRE 1.6.0_07.
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###### API Adjustments
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- `AbstractRenderer` - added `clearSeriesPaints()` and `clearSeriesStrokes()` methods;
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- `BarRenderer` - added `shadowPaint` attribute;
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- `CategoryAxis` - added `getCategoryMiddle()` method;
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- `CategoryPlot` - added `getRendererCount()` method;
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- `ChartFactory` - added `get/setChartTheme()` methods;
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- `ChartPanel` - increased default maximum drawing width and height;
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- `ChartTheme` - new interface;
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- `ChartUtilities` - added `applyCurrentTheme()` method;
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- `CompositeTitle` - added `backgroundPaint` attribute;
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- `GradientBarPainter` - new class;
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- `LegendTitle` - added `getWrapper()` method;
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- `OHLCSeriesCollection` - added `xPosition` attribute;
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- `PaintScaleLegend` - new subdivisions field;
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- `PiePlot` - added `autoPopulate` flags, and methods to clear section attributes;
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- `Plot` - added `setDrawingSupplier()` method;
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- `RegularTimePeriod` - the `DEFAULT_TIME_ZONE` field has been deprecated in this release;
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- `RelativeDateFormat` - added methods to control formatting of hours and minutes - see patch 2033092;
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- `StandardChartTheme` - new class;
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- `XYItemRendererState` - new methods;
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- `XYPlot` - added `getRendererCount()` method;
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- `XYShapeRenderer` - new class;
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- `XYTaskDataset` - new class.
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###### Patches
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- 1997549 : Status calls to `XYItemRendererState` [Ulrich Voigt];
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- 2006826 : `CompositeTitle` drawing fix;
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- 2033092 : Additional formatters for `RelativeDateFormat` [Cole Markham];
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###### Bug Fixes
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- 1994355 : `ChartComposite` listener type;
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- 2031407 : Incorrect rendering in `StackedBarRenderer3D`;
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- 2033721 : `WaferMapRenderer`;
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- 2051168 : No key in `LegendItemEntity` for pie charts;
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Also fixed drawing of alternate grid bands in `SymbolAxis`, the `totalWeight` 
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calculation in the `CombinedXXXPlot` classes, a `NullPointerException` in the
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`XYPlot` class when drawing quadrants, outline visibility in the 
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`CategoryPlot` class, and auto-range calculations with `XYBarRenderer`.
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##### Version 1.0.10 (8-Jun-2008)
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This release contains various bug fixes and minor enhancements to JFreeChart.
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- PiePlot labelling has been enhanced (new curve options, and more robust bounds checking);
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- The BoxAndWhiskerRenderer now has a maximumBarWidth attribute;
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- the XYStepRenderer has a new stepPoint attribute;
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- The RelativeDateFormat class has new options;
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- There are new dataset classes (SlidingCategoryDataset and SlidingGanttDataset) that permit a subset of categories to be plotted, and allow charts based on these datasets to simulate scrolling.  
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- There is a new ShortTextTitle class.
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This release passes 1,929 JUnit tests (0 failures) on JRE 1.6.0_03.
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###### API Adjustments:
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- BoxAndWhiskerRenderer - added maximumBarWidth attribute (see patch 1866446);
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- ChartPanel - the zoomPoint attribute has been changed from Point to Point2D;
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- DatasetUtilities - iterateCategoryRangeBounds() is deprecated, the method has been renamed iterateRangeBounds(CategoryDataset) for consistency;
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- DefaultKeyedValue - the constructor now prevents a null key;
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- LogFormat - now has a 'powerLabel' attribute;
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- ShortTextTitle - a new title class;
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- SlidingCategoryDataset - new class;
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- SlidingGanttDataset - new class;
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- TimeSeriesCollection - getSeries(String) changed to getSeries(Comparable);
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- XIntervalSeriesCollection - added series removal methods;
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- YIntervalSeriesCollection - added series removal methods;
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- XYIntervalSeriesCollection - added series removal methods;
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`PublicCloneable` is now implemented by a number of classes that didn't previously implement the interface - this should improve the reliability of chart cloning.
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###### Patches
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- 1943021 : Fix for MultiplePiePlot [Brian Cabana];
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- 1925366 : Speed improvement for DatasetUtilities [Rafal Skalny];
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- 1918209 : LogAxis createTickLabel() changed from private to protected [Andrew Mickish];
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- 1914411 : Simplification of plot event notification [Richard West];
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- 1913751 : XYPlot and CategoryPlot addMarker() methods with optional notification [Richard West];
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- 1902418 : Bug fix for LogAxis vertical labels [Andrew Mickish];
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- 1901599 : Fixes for XYTitleAnnotation [Andrew Mickish];
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- 1891849 : New curve option for pie chart label links [Martin Hilpert];
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- 1874890 : Added step point to XYStepRenderer [Ulrich Voigt];
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- 1873328 : Enhancements to RelativeDateFormat [Michael Siemer];
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- 1871902 : PolarPlot now has angleTickUnit attribute [Martin Hoeller];
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- 1868745 : Fix label anchor points on LogAxis [Andrew Mickish];
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- 1866446 : Added maximumBarWidth to BoxAndWhiskerRenderer [Rob Van der Sanden];
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###### Bug Fixes
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- 1932146 - PeriodAxis.setRange() doesn't notify listeners;
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- 1927239 - Fix calculation of cumulative range;
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- 1926517 - Bugs in data range calculation for combined plots;
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- 1920854 - PiePlot3D labels drawn multiple times;
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- 1897580 - Fix for DefaultIntervalCategoryDataset;
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- 1892419 - Wrong default for minor tick count in LogAxis;
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- 1880114 - VectorRenderer doesn't work for horizontal plot orientation;
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- 1873160 - DialPlot clipping issues;
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- 1868521 - Problem saving charts to JPEG format;
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- 1864222 - Error on TimeSeries createCopy() method;
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The `DatasetUtilities.sampleFunction2D()` has been changed to sample the correct 
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number of points - you should check any code that calls this method.  The
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`XYBlockRenderer` class now generates entities.  Bugs in the `removeDomainMarker()`
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and `removeRangeMarker()` methods in the `CategoryPlot` and `XYPlot` classes have 
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been fixed.  A bug in the `TimePeriodValues` range calculation has been fixed.
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Fixes were applied to the `clone()` methods in the `TaskSeries` and 
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`TaskSeriesCollection` classes.
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###### New Experimental Features
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Two new classes `CombinedCategoryPlot` and `CombinedXYPlot` have been added to the
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'experimental' source tree - these were contributed by Richard West (see
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patch 1924543).
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##### Version 1.0.9 (4-Jan-2008)
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This release contains an important security patch as well as various bug fixes 
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and minor enhancements.  Regarding the security patch, please see the 
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following advisory:
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http://www.rapid7.com/advisories/R7-0031.jsp
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Note that the fix incorporated in the special JFreeChart 1.0.8a release was
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flawed in that it broke the URLs in the HTML image maps generated by 
469
JFreeChart.  Further amendments have been made in this release to fix this 
470
problem.
471

    
472
###### API Adjustments
473

    
474
A number of classes have new methods.  Nothing has been removed or deprecated:
475

    
476
- HashUtilities - added hashCode() methods for BooleanList, PaintList and StrokeList;
477
- ImageMapUtilities - added htmlEscape(String);
478
- IntervalMarker - added new constructor;
479
- Range - added intersects(Range) and scale(Range, double);
480
- TextTitle - added protected methods arrangeNN(), arrangeFN() and arrangeRN();
481
- XYDataItem - added getXValue() and getYValue() methods;
482
- XYPlot - added setFixedDomainAxisSpace(AxisSpace, boolean) and setFixedRangeAxisSpace(AxisSpace, boolean);
483
- XYSeriesCollection - added getSeries(Comparable) method.
484

    
485
###### Bug Fixes
486

    
487
- 1852525 - CandlestickChart.getCategoryPlot() - ClassCastException;
488
- 1851416 - testGetFirstMillisecondWithTimeZone fails in 1.0.8a;
489
- 1849333 - 1.0.8a breaks URLs in HTML image maps;
490
- 1848961 - GroupedStackedBarRenderer works only for primary dataset;
491
- 1846063 - Endless loop in paint of XYPlot;
492
- 1840139 - Cross-site scripting vulnerabilities in image map code;
493
- 1837979 - Background image not shown with SWT;
494
- 1460195 - ChartEntity.getImageMapAreaTag() needs nohref;
495
- 1400917 - OverLIBToolTipTagFragmentGenerator not escaping single quote;
496
- 1363043 - Escape Image Map Data;
497
- 1178601 - AbstractRenderer.hashcode() method returns the same value;
498

    
499
In addition, a bug in the constructor for the Week class has been fixed.  
500

    
501
##### Version 1.0.8 (23-Nov-2007)
502
This release is primarily a bug fix release:
503
- a problem with pie chart labeling;
504
- a regression in the `DefaultCategoryDataset` class (and underlying `KeyedValues2D` class);
505
- a cloning bug in the `TimeSeries` class.  
506

    
507
In addition:
508
- the `StatisticalBarRenderer` class has a new `errorIndicatorStroke` field and has been updated to support gradients;
509
- the `StandardDialScale` has had some missing accessor methods implemented;
510
- an override field in the `StandardXYItemRenderer` class has been deprecated;
511
- some warnings reported by FindBugs 1.3.0 have been addressed.
512

    
513
##### Version 1.0.7 (14-Nov-2007)
514
This release features
515
- new classes `DialPlot` and `LogAxis` (previously in experimental);
516
- initial support for minor tick units;
517
- a new anchored zooming option for the `ChartPanel` class;
518
- optional simple labeling on pie charts;
519
- improvements to the "statistical" datasets and underlying data structures;
520
- and numerous bug fixes.
521

    
522
###### API Adjustments
523

    
524
- `CategoryAxis` - added `getCategorySeriesMiddle()` method;
525
- `CategoryPlot` - added methods to remove markers;
526
- `ChartPanel` - added `defaultDirectoryForSaveAs` attribute;
527
- `DialPlot` - new class, an alternative to `MeterPlot`;
528
- `LogAxis` - new class, an alternative to `LogarithmicAxis`;
529
- `NumberTick` - new constructor that allows specification of the tick type;
530
- `NumberTickUnit` - new constructor to specify the minor tick count;
531
- `SymbolAxis` - new methods `get/setGridBandAlternatePaint()`;
532
- `TickType` - new class;
533
- `TickUnit` - added `minorTickCount` attribute;
534
- `ValueTick` - added `tickType` attribute;
535
- `StandardPieSectionLabelGenerator` - new constructors accepting a Locale;
536
- `StandardPieToolTipGenerator` - likewise;
537
- `CategoryPlot` - added `getRangeAxisIndex()`, `zoomDomainAxes()` and `zoomRangeAxes()` methods;
538
- `FastScatterPlot` - added new zooming methods;
539
- `PiePlot` - new attributes to support simple labeling;
540
- `PlotUtilities` - new class;
541
- `PolarPlot` - added new zooming methods;
542
- `ThermometerPlot` - likewise;
543
- `XYPlot` - added methods to remove markers (patch 1823697--same as for `CategoryPlot`), and added new zooming methods; 
544
- `Zoomable` - added new zooming methods to this interface;
545
- `LineAndShapeRenderer` - added `useSeriesOffset` and `itemMargin` attributes;
546
- `MinMaxCategoryRenderer` - implemented `equals()`;
547
- `XYSplineAndShapeRenderer` - new class;
548
- `LogFormat` - new class;
549
- `ChartFactory` - new pie and ring chart creation methods that accept a `Locale`;
550
- `ChartPanel` - added `zoomAroundAnchor` attribute;
551
- `Series` - added `isEmpty()` method;
552
- `BoxAndWhiskerItem` - new convenience constructor;
553
- `DefaultBoxAndWhiskerCategoryDataset` - new remove methods;
554
- `DefaultStatisticalCategoryDataset` - likewise;
555
- `MeanAndStandardDeviation` - added new value accessor methods;
556
- `TimeTableXYDataset` - added `clear()` method;
557
- `Week` - added new constructor;
558
- `KeyedObjects` - added `insertValue()` and `clear()` methods;
559
- `KeyedObjects2D` - added `clear()` method.
560

    
561
###### Patches
562

    
563
- 1823724 - updated `XYDifferenceRenderer` to support item labels;
564
- 1827829 - fixed possible `NullPointerException` in `XYBarRenderer`;
565

    
566
###### Bug Fixes
567

    
568
- 1767315 - `GrayPaintScale.getPaint()` uses wrong value;
569
- 1775452 - Inverted `XYBarRenderer` does not render margins correctly;
570
- 1802195 - `Marker.listenerList` serializable;
571
- 1779941 - `StatisticalBarRenderer` NPE;
572
- 1766646 - `XYBlockRenderer` can't handle empty datasets;
573
- 1763413 - `PeriodAxis` labels fail to display with setInverted;
574
- 1737953 - Zoom doesn't work on `LogAxis` (Demo1);
575
- 1749124 - `JFreeChart` not added as `TitleChangeListener`; 
576

    
577
##### Version 1.0.6 (15-Jun-2007)
578
This release features:
579
- a new `VectorRenderer` (previously in experimental);
580
- a generalised `XYDifferenceRenderer`;
581
- better support for hotspots on legend items;
582
- improved performance for time series charts displaying subsets of data;
583
- support for `GradientPaint` in plot backgrounds;
584
- plus the usual slew of bug fixes and minor feature additions.
585

    
586
###### API Adjustments
587

    
588
- `CategoryItemEntity` - replaced row and column index attributes with row and column key attributes;
589
- `CategoryItemRenderer` - numerous series override settings have been deprecated;
590
- `DefaultPieDataset` - added `insertValues()` method;
591
- `HexNumberFormat` - new class;
592
- `LegendItem` - added dataset and seriesKey attributes;
593
- `Plot` - added new `fillBackground()` method to support `GradientPaint`, and added `is/setOutlineVisible()` methods;
594
- `QuarterDateFormat` - added `GREEK_QUARTERS` field plus a new constructor;
595
- `SimpleHistogramDataset` - added `clearObservations()` and `removeAllBins()` methods;
596
- `TimeSeriesCollection` - added `indexOf()` method;
597
- `URLUtilities` - new class;
598
- `XYItemRenderer` - numerous series override settings have been deprecated;
599
- `XYSeriesCollection` - added indexOf() method.
600

    
601
###### Bug Fixes
602

    
603
- 1735508 - `ClusteredXYBarRenderer` fails with inverted x-axis;
604
- 1726404 - `ChartComposite` tooltips;
605
- 1713474 - `StackedBarRenderer3D` doesn't fill shadows;
606
- 1713401 - `StackedBarRenderer3D` doesn't check `drawBarOutline` flag;
607
- 1701822 - `DefaultBoxAndWhiskerCategoryDataset` doesn't follow contracts;
608
- 1698965 - NPE in `CombinedDomainXYPlot`;
609
- 1690994 - `HideSeriesDemo1` does not work;
610
- 1690654 - Bug in `removeValue()` of `DefaultKeyedValues2D`;
611
- 1562701 - `LegendItemEntity` needs dataset index;
612
- 1486299 - Use `URLEncoder.encode()` for URL generators;
613

    
614
Plus the following bugs that didn't have entries in the database:
615

    
616
- `BarRenderer` - check for series visibility in `getLegendItem()`;
617
- `ChartPanel` - use correct insets for painting chart buffer to screen, update UI for popup menu if LookAndFeel changes;
618
- `DateAxis` - fixed boundary cases for `previousStandardDate()` method;
619
- `LineBorder` - only draw border if area has positive dimensions;
620
- `JFreeChart` - should register as a listener with the default legend;
621
- `StandardXYItemRenderer` - fixed a problem where chart entities are created for non-visible items;
622
- `TimePeriodValuesCollection.getDomainBounds()` now computes the bounds correctly;
623
- `XYLineAndShapeRenderer` - fixed a problem where chart entities are created for non-visible items;
624
- `XYLine3DRenderer` - `equals()` implemented, and serialization fixed;
625
- `XYTitleAnnotation` - fixed `equals()` method;
626
- various resource usage bugs in the experimental `ChartComposite` class;
627

    
628
##### Version 1.0.5 (23-Mar-2007)
629
This release features:
630
- a new `DeviationRenderer` class;
631
- support for item labels in `StackedXYBarRenderer`;
632
- tooltips and URLs in the `CategoryStepRenderer`; and 
633
- many bug fixes.
634

    
635
###### API Adjustments
636

    
637
- `AbstractCategoryItemRenderer` - added `createState()` method;
638
- `StackedXYBarRenderer` - added `get/setRenderAsPercentages()` methods;
639
- `XYIntervalSeries` - added `getXLowValue()`, `getXHighValue()`, `getYLowValue()` and `getYHighValue()`;
640
- `YIntervalSeries` - added `getYLowValue()` and `getYHighValue()` methods;
641
    
642
###### Bug Fixes
643

    
644
- 1681777 - `DefaultCategoryDataset` does not clone data;
645
- 1672552 - Zoom rectangle is lost when the chart is repainted;
646
- 1671645 - `Crosshair` incorrectly positioned in horizontal orientation;
647
- 1669302 - Tick labels in vertical symbol axis;
648
- 1669218 - `CategoryPlot.setDomainAxisLocation()` ignores parameter;
649
- 1667750 - Clip region not restored in `Spider` and `MeterPlot`;
650
- 1663380 - OutputStream not closed;
651
- 1659627 - `IntervalMarker` with `Double.POSITIVE_INFINITY` bound;
652
- 1647269 - `IntervalMarker` with `Double.MAX_VALUE as upper` bound;
653
- 1594477 - `XYBarRenderer` does not render bars on `LogarithmicAxis`;
654
- 1459958 - Log axis zoom function problem;
655
- 880597 - Zooming `ChartPanel` with log axes;
656
- 764561 - Dynamic chart zoom buggy.
657
 
658
Also fixed numerous bugs in equals(), cloning and serialization implementations.  
659

    
660
##### Version 1.0.4 (9-Feb-2007)
661

    
662
This release features:
663
- a new `XYBlockRenderer` class;
664
- URLs for pie chart labels in HTML image maps;
665
- a new dataset implementation for open-high-low-close charts;
666
- support for gradient paint in `ClusteredXYBarRenderer`, `StackedXYBarRenderer` and legend graphics;
667
- a new anchor attribute for `XYImageAnnotation`;
668
- improvements to the experimental SWT support; plus
669
- a number of additions to the API for usability; and 
670
- many bug fixes.
671

    
672
###### API Adjustments
673

    
674
- `DateAxis` - added `get/setTimeZone()` methods;
675
- `DefaultXYDataset` - now implements `PublicCloneable`;
676
- `StackedXYAreaRenderer2` - added `get/setRoundXValues()` methods;
677
- `StandardXYItemLabelGenerator` - added new constructor;
678
- `StandardXYToolTipGenerator` - added new constructor;
679
- `XYBarDataset` - added `getUnderlyingDataset()` and `get/setBarWidth()` methods;
680
- `XYDifferenceRenderer` - added `roundXCoordinates` attribute;
681
- `XYImageAnnotation` - added an image anchor attribute, a new constructor, and several accessor methods;
682
- `XYSeries` - added `toArray()` method;
683

    
684
###### Bug Fixes
685

    
686
- 1654215 - `XYPlot` renderer with no corresponding dataset;
687
- 1652640 - `RangeMarkers` do not update properly;
688
- 1649686 - `Crosshairs` for `StackedXYAreaRenderer`;
689
- 1647749 - `IllegalArgumentException` in `SWTAxisEditor`;
690
- 1644877 - Replacing series data in `DefaultXYDataset`;
691
- 1644010 - `DateAxis.nextStandardDate()` ignores timezone;
692
- 1638678 - `DateAxis` code uses the default calendar;
693
- 1629382 - Tests fail for jfreechart-1.0.3;
694
- 1624067 - `StandardXYToolTipGenerator` missing constructor;
695
- 1616583 - Serialize `ChartDeleter`;
696
- 1612770 - Popup menu in wrong position for SWT `ChartComposite`;
697
- 1611872 - `Minute.previous()` returns null for minute == 0;
698
- 1608371 - Tick labels overlap with custom `NumberFormat`;
699
- 1606205 - Draw shared axis last on combined plots;
700
- 1605207 - `IntervalMarker` exceeds bounds of data area;
701
- 1605202 - `SpiderWebPlot` method access;
702
- 1599652 - Inverted `StackedBar3D` problem;
703
- 1598394 - `XYBarDataset` hiding its proxied object;
704
- 1564967 - Crosshairs on `XYDifferenceRenderer`;
705
- 1245305 - `NullPointerException` in `writeImageMap()`;
706
- 1086307 - Crosshairs on plots with multiple axes.
707

    
708
Also fixed numerous bugs in `equals()` and `clone()` methods throughout the API.
709

    
710
##### Version 1.0.3 (17-Nov-2006)
711

    
712
This release features:
713
- several new `IntervalXYDataset` implementations;
714
- some significant refactoring of the time period classes (to improve performance and correctness);
715
- modifications to the `PiePlot` class to support reordering of dataset items;
716
- a new event mechanism to allow updating of markers, plus
717
- many other enhancements, bug fixes and documentation updates.
718

    
719
A new `DialPlot` implementation has been added to the 'experimental' sources. 
720
We are looking for people to test this code and provide feedback, so that we
721
can stabilize the API and add this code to the main JFreeChart API.
722

    
723
###### API adjustments
724

    
725
The following adjustments have been made to the API:
726

    
727
- `CategoryLabelEntity` - new class;
728
- `CategoryPointerAnnotation` - new class;
729
- `ChartPanel`: added new public method `doEditChartProperties()`;
730
- `ComparableObjectItem`, `ComparableObjectSeries` - new classes;
731
- `CrosshairState`: added several new accessor methods;
732
- `DefaultPieDataset`: added `sortByKeys()` and `sortByValues()` methods;
733
- `Markers`: a change event mechanism has been added to the `Marker` class and its subclasses;
734
- `StackedAreaRenderer`: added `get/setRenderAsPercentages()` methods;
735
- `XIntervalDataItem`, `XIntervalSeries` and `XIntervalSeriesCollection` - new classes;
736
- `XYErrorRenderer`: new class;
737
- `XYInterval`, `XYIntervalDataItem`, `XYIntervalSeries` and `XYIntervalSeriesCollection` - new classes;
738
- `YInterval`, `YIntervalDataItem`, `YIntervalSeries`, `YIntervalSeriesCollection` and `YWithXInterval` - new classes.
739

    
740
###### Bug Fixes
741

    
742
- 1578293 - Unused methods in `JDBCXYDataset`;
743
- 1572478 - `BoxAndWhiskerRenderer` potential `NullPointerException`;
744
- 1569094 - `XYStepRenderer` with horizontal orientation;
745
- 1565168 - Crosshair position incorrect;
746
- 1564977 - `DateAxis` missing initial tick label;
747
- 1562759 - `StatisticalLineAndShapeRenderer` constructor ignores arguments;
748
- 1557141 - Bad locale in `ServletUtilities`;
749
- 1550045 - `TimeSeries.removeAgedItems()` method problems;
750
- 1549218 - Chart not displaying when all data values are the same and large;
751
- 1450447 - `Marker.setAlpha()` ignored;
752

    
753
Also fixed URL generation for legend items, tick mark positioning on the 
754
`DateAxis`, the `equals()` method in the `AreaRenderer` class, hardcoded outline 
755
attributes in the `XYBubbleRenderer`, and potential `NullPointerExceptions` in the
756
`ChartPanel` class.
757

    
758
##### Version 1.0.2 (25-Aug-2006)
759

    
760
###### API adjustments
761

    
762
The following adjustments have been made to the API (there should be no breakage of applications coded to the 1.0.0 or 1.0.1 API):
763

    
764
- `CategoryToPieDataset`: added accessor methods for underlying dataset, extract type and index (feature request 1477915);
765
- `DefaultXYDataset`:  New dataset implementation that uses double[] arrays;
766
- `DefaultXYZDataset`:  New dataset implementation that uses double[] arrays;
767
- `LegendItemBlockContainer`: New container used in legends (enables legend item entities again);
768
- `MultiplePiePlot`:  Added new fields `aggregatedItemsKey` and `aggregatedItemsPaint`, plus accessor methods - see bug 1190647;
769
- `SpiderWebPlot`:  Added new fields `toolTipGenerator` and `urlGenerator`, plus accessor methods (see patch 1463455);
770
- `StackedBarRenderer3D`:  Added new flag (`renderAsPercentages`), plus accessor methods, that controls whether the data items are displayed as values or percentages.  Two new constructors are also added (see patch 1459313);
771
- `XYPolygonAnnotation`: Added new accessor methods.
772

    
773
###### Patches
774

    
775
- 1459313 - Add `renderAsPercentages` option to `StackedBarRenderer3D`;
776
- 1462727 - Modify `SpiderWebPlot` to support zero values;
777
- 1463455 - Modify `SpiderWebPlot` to support mouse clicks, tool tips and URLs;
778

    
779
###### Bug Fixes
780

    
781
- 1514904 - Background image alpha in `Plot` class;
782
- 1499140 - `ClusteredXYBarRenderer` with margin not drawing correctly;
783
- 1494936 - `LineAndShapeRenderer` generates entity for non-visible item;
784
- 1493199 - NPE drawing `SpiderWebPlot` with null info;
785
- 1480978 - `AbstractPieItemLabelGenerator.clone()` doesn't clone `percentFormat`;
786
- 1472942 - `DateAxis.equals()` broken;
787
- 1468794 - `StatisticalLineAndShapeRenderer` doesn't draw error bars correctly when the plot has a horizontal orientation;
788
- `AbstractCategoryItemRenderer` doesn't check `seriesVisibleInLegend` flag before creating new item;
789
- 1440415 - Bad distribution of pie chart section labels;
790
- 1440346 - Bad manifest entry for JCommon in JFreeChart jar file;
791
- 1435461 - `NumberAxis.equals()` ignores `rangeType` field;
792
- 1435160 - `XYPointerAnnotation.equals()` ignores x and y fields;
793
- 1398672 - `LegendItemEntities` not working;
794
- 1380480 - `StandardXYItemRenderer` problems with `Double.NaN`;
795
- 1190647 - Legend and section color mismatch for `MultiplePiePlot`.
796

    
797
###### Miscellaneous Changes
798

    
799
- Updated `CandlestickRenderer`, `CyclicXYItemRenderer`, `HighLowRenderer`, `XYStepAreaRenderer` and `TimeSeriesURLGenerator` to call dataset methods that return double primitive only;
800
- Updated `XYPolygonAnnotation`, adding new accessor methods and fixing problems in the `equals()/hashCode()` methods;
801
- `ChartFactory.createStackedXYAreaChart()` now uses `StackedXYAreaRenderer2`, for better handling of negative values;
802
- Added crosshair support for `XYBarRenderer`.
803

    
804
###### Experimental Code
805

    
806
In this release, some new (incomplete) classes have been included in the 
807
`org.jfree.experimental.*` namespace.  These classes are not part of the 
808
standard API, but are included for developers to experiment with and provide
809
feedback on.  Hopefully in the future, refined versions of these classes will
810
be incorporated into the main library.  PLEASE NOTE THAT THE API FOR THESE
811
CLASSES IS SUBJECT TO CHANGE. 
812

    
813
##### Version 1.0.1 (27-Jan-2006)
814
This is primarily a bug fix release.  In addition, there are some API 
815
adjustments (there should be no breakage of applications coded to the 1.0.0 API).
816

    
817
###### API adjustments
818
- `BarRenderer`: added a new flag (`includeBaseInRange`), plus accessor 
819
    methods, that controls whether or not the base value for the bar is 
820
    included in the range calculated by the `findRangeBounds()` method;
821
- `BubbleXYItemLabelGenerator`: new class;
822
- `Range`: added a new method `expandToInclude(Range, double)`, this is used by 
823
    the `BarRenderer` class;
824
- `TaskSeriesCollection`: added two new methods, `getSeries(int)` and 
825
    `getSeries(Comparable)`;
826
- `TimeSeriesCollection`:  the `domainIsPointsInTime` flag has been deprecated. 
827
  The flag serves no function now that renderers are used to calculate the domain 
828
  bounds, so you can safely delete any calls to the `setDomainIsPointsInTime()`
829
  method;
830
- `XYPlot`: added a new `getAnnotations()` method;
831
- `XYSeries`: the `update(int, Number)` method has been deprecated and a new 
832
  method `updateByIndex(int, Number)` has been added;
833

    
834
###### Bug fixes
835

    
836
- 1243050 - `XYBarRenderer` doesn't show entire range of values for a `TimeSeriesCollection`;
837
- 1373371 - `XYBubbleRenderer` doesn't support item labels;
838
- 1374222 - `BarRenderer` contains JDK 1.4 specific code;
839
- 1374328 - `LegendItem` serialization problem;
840
- 1377239 - Bad argument checking in `Quarter` constructor;
841
- 1379331 - Incorrect drawing of `TextTitle` at LEFT or RIGHT position;
842
- 1386328 - `RingPlot` entity incorrect;
843
- 1400442 - Inconsistent treatment of null and zero values in `PiePlot`;
844
- 1401856 - Bad rendering for non-zero base values in `BarRenderer`;
845
- 1403043 - `NullPointerException` in `CategoryAxis`;
846
- 1408904 - `NumberAxis3D` assumes `CategoryPlot`;
847
- 1415480 - `XYTextAnnotation` equals() method doesn't check (x, y);
848

    
849
##### Version 1.0.0 (2-Dec-2005) 
850
- 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;
851

    
852
##### Version 1.0.0-rc3 (28-Nov-2005)
853
- 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).
854
- if no significant problems are reported in the next few days, the 1.0.0 "final" release will be posted on 2-Dec-2005.
855

    
856
##### Version 1.0.0-rc2 (25-Nov-2005)
857
- 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.
858

    
859
##### Version 1.0.0-rc1 (2-Jun-2005)
860
- 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.
861

    
862
##### Version 1.0.0-pre2 (10-Mar-2005)
863

    
864
##### Version 1.0.0-pre1 (29-Nov-2004)
865

    
866
##### Version 0.9.21 (9-Sep-2004)
867
- added new axes: `PeriodAxis` and `ModuloAxis`.
868
- split `org.jfree.data` and `org.jfree.chart.renderer` into subpackages for 'category' and 'xy' charts.
869
- Sun PNG encoder is now used, if available.
870
- a new demo application makes it easier to preview the chart types that JFreeChart can create.
871
- added a new series visibility flag to the `AbstractRenderer` class.
872
- added support for `GradientPaint` in interval markers.
873

    
874
##### Version 0.9.20 (7-Jun-2004)
875
- primarily bug fixes.
876

    
877
##### Version 0.9.19 (28-May-2004)
878
- added methods to `XYDataset` that return double primitives;
879
- removed distinction between "primary" and "secondary" datasets, renderers and axes;
880
- added fixed legend item options to `CategoryPlot` and `XYPlot`;
881
- legend changes by Barek Naveh;
882
- removed Log4j dependency;
883
- many, many bug fixes;
884

    
885
##### Version 0.9.18 (15-Apr-2004)
886
- new legend anchor options;
887
- fixed broken JPEG export;
888
- fixed title size problems;
889
- various other bug fixes;
890

    
891
##### Version 0.9.17 (26-Mar-2004)
892
- pie chart enhancements for labelling, shading and multiple pie charts (2D or 3D) on a single plot;
893
- new `PolarPlot` class added;
894
- `XYSeries` can now be sorted or unsorted;
895
- `createBufferedImage()` method can now scale charts;
896
- domain and range markers now support intervals;
897
- item labels are now supported by some `XYItemRenderers`;
898
- tooltip and item label generators now use `MessageFormat` class;
899
- added new `XYBarDataset` class;
900
- added transparency support to PNG export;
901
- numerous other small enhancements and bug fixes;
902

    
903
##### Version 0.9.16 (09-Jan-2004)
904
- this release contains bug fixes and some minor feature enhancements (title and category label wrapping, legend shape scaling, enhanced performance for the `DefaultTableXYDataset` class);
905
- added Spanish localisation files;
906

    
907
##### Version 0.9.15 (28-Nov-2003)
908
- the focus of this release is bug fixes - quite a number of issues have been resolved, please check the bug database for details;
909
- added a new Wafer Map chart type;
910
- added a cyclic axis;
911
- added localisation files for _ru;
912

    
913
##### Version 0.9.14 (17-Nov-2003)
914
- implemented zooming for the `FastScatterPlot` class;
915
- added item label support for stacked bar charts, and new fall back options for item labels that don't fit within bars;
916
- modified the `CategoryAxis` class to allow additional options for the alignment and rotation of category labels;
917
- addition of the `AxisState` class, used in the drawing of axes to eliminate a bug when multiple threads draw the same axis simultaneously;
918
- provided additional attributes in the `DateTickUnit` class to improve labelling on a segmented `DateAxis`;
919
- added support for `GradientPaint` in bar charts;
920
- updated the `PNGEncoder`;
921
- fixes for tick label positioning on axes;
922
- various Javadoc updates;
923
- numerous bug fixes;
924

    
925
##### Version 0.9.13 (26-Sep-2003)
926
         - various enhancements to the stacked area XY charts;
927
         - added a completion indicator for the Gantt chart;
928
         - range and domain markers can now be placed in the foreground or the
929
           background;
930
         - more fixes for cloning and serialization;
931
         - fixed mouse event bug for combined charts;
932
         - fixed bugs in the PngEncoder class;
933
         - incorporated .properties files that were missing from the 0.9.12
934
           distribution;
935

    
936
##### Version 0.9.12 (11-Sep-2003)
937
         - extended box-and-whisker plots to work with the CategoryPlot class
938
           as well as the XYPlot class (based on work by David Browning);
939
         - added a new LayeredBarRenderer (by Arnaud Lelievre);
940
         - added support for stacked area charts with the XYPlot class (thanks
941
           to Richard Atkinson);
942
         - improved HTML image map support (thanks to Richard Atkinson);
943
         - added localized resources for the chart property editors (thanks to
944
           Arnaud Lelievre).  Current translations include French and Portugese
945
           (thanks to Eduardo Ramalho);
946
         - added facility for setting all rendering hints;
947
         - improved support for cloning and serialization;
948
         - fixed a bug in the XYSeries class that prevented the TableXYDataset
949
           from functioning correctly;
950
         - improved date axis labelling with segmented time lines;
951
         - fixed several bugs in the secondary dataset/axis/renderer code;
952
         - fixed bugs in the JDBCCategoryDataset class;
953
         - numerous other bug fixes;
954

    
955
##### Version 0.9.11 (8-Aug-2003)
956
         - added support for box-and-whisker plots, thanks to David Browning;
957
         - lots of bug fixes;
958

    
959
##### Version 0.9.10 (25-Jul-2003)
960
         - added support for multiple secondary axes, datasets and
961
           renderers;
962
         - minor feature enhancements and bug fixes;
963

    
964
##### Version 0.9.9 (10-Jul-2003) 
965

    
966
PLEASE NOTE THAT MAJOR CHANGES HAVE BEEN MADE IN THIS
967
RELEASE AND ONE OR TWO FEATURES MAY BE BROKEN.  PLEASE REPORT BUGS SO THEY CAN
968
BE FIXED FOR THE NEXT RELEASE.
969

    
970
        - merged the HorizontalCategoryPlot and VerticalCategoryPlot classes,
971
          into the CategoryPlot class;
972
        - merged the horizontal and vertical axis classes;
973
        - merged the horizontal and vertical renderer classes;
974
        - CategoryPlot and XYPlot now support both horizontal and vertical
975
          orientation via the setOrientation(...) method;
976
        - merged horizontal and vertical methods in the ChartFactory class;
977
        - created new combined plot classes: CombinedDomainCategoryPlot,
978
          CombinedRangeCategoryPlot, CombinedDomainXYPlot and
979
          CombinedRangeXYPlot (these can all be drawn with a horizontal or
980
          vertical orientation);
981
        - Bill Kelemen has enhanced the DateAxis class to handle segmented
982
          timelines.  This can be used, for example, to skip weekends for
983
          daily stock price charts;
984
        - Richard Atkinson has updated the ServletUtilities class;
985
        - Bryan Scott has added an XYDatasetTableModel class for presenting
986
          datasets in a JTable;
987
        - modified XYPlot to allow renderers to use multiple passes through
988
          the dataset;
989
        - added new XYDifferenceRenderer;
990
        - added support for colored bands between gridlines in XYPlot;
991
        - added new XYDrawableAnnotation class;
992
        - added a new attribute to control the order of dataset rendering in
993
          a CategoryPlot;
994
        - extended the value label mechanism for the renderers, to allow
995
          better (per series) control over label generation, positioning and
996
          visibility;
997
        - CategoryItemTooltipGenerator has been renamed
998
          CategoryItemLabelGenerator, since it is now being used to generated
999
          item labels as well as tooltips;
1000
        - there is now support for horizontal stacked 3D bar charts;
1001
        - added support for range markers against secondary axis in a
1002
          CategoryPlot;
1003
        - added labels to domain and range markers;
1004
        - added a new HistogramDataset class (contributed by Jelai Wang) to
1005
          make it easier to create histograms with JFreeChart;
1006
        - moved the DrawingSupplier into the plot class, renderers now
1007
          reference the supplier from the plot (parent plot for combined and
1008
          overlaid charts).  This means that renderers now share a single
1009
          DrawingSupplier by default, which simplifies the creation of
1010
          combined charts;
1011
        - changed the ColorBarAxis classes that extended the NumberAxis class,
1012
          to a single ColorBar class that wraps a ValueAxis (may have broken
1013
          one or two things in the process);
1014
        - Barak Naveh has contributed new classes MatrixSeries and
1015
          MatrixSeriesCollection, along with demos:  BubblyBubblesDemo.java
1016
          and BubblyBubblesDemo2.java;
1017
        - the TextTitle class now has a background paint attribute;
1018
        - the StandardLegend class now generates LegendEntity objects if a
1019
          ChartRenderingInfo instance is supplied to the draw(...) method;
1020
        - extended the CategoryTextAnnotation class to take into account a
1021
          category anchor point.  See the SurveyResultsDemo.java application
1022
          for an example;
1023
        - included numerous bug fixes;
1024

    
1025
##### Version 0.9.8 (24-Apr-2003)
1026
        - changed package naming from com.jrefinery.* to org.jfree.*;
1027
        - added new TimePeriodValuesCollection class;
1028
        - added MIME type code to ServletUtilities class;
1029
        - reversed the order of PieDataset and KeyedValuesDataset in
1030
          the class hierarchy;
1031
        - reversed the order of CategoryDataset and KeyedValues2DDataset
1032
          in the class hierarchy;
1033
        - minor bug fixes;
1034

    
1035
##### Version 0.9.7 (11-Apr-2003)
1036
        - added a new ValueDataset interface and DefaultValueDataset
1037
          class, and changed the CompassPlot class to use this instead
1038
          of MeterDataset;
1039
        - added DataUtilities class, to support creation of Pareto
1040
          charts (new demo included);
1041
        - updated writeImageMap method as suggested by Xavier Poinsard
1042
          (see Feature Request 688079);
1043
        - implemented Serializable for most classes (this is likely to
1044
          require further testing);
1045
        - incorporated contour plot updates from David M. O'Donnell;
1046
        - added new CategoryTextAnnotation and XYLineAnnotation
1047
          classes;
1048
        - added new HorizontalCategoryAxis3D class contributed by
1049
          Klaus Rheinwald;
1050

    
1051
        Bug fixes:
1052
        - added a workaround for JVM crash (a JDK bug) in pie charts
1053
          with small sections (see bug report 620031);
1054
        - fixed minor bug in HorizontalCategoryPlot constructor (see
1055
          bug report 702248);
1056
        - added code to ensure HorizontalNumberAxis3D is not drawn if
1057
          it is not visible (see bug report 702466);
1058
        - added small fix for suppressed chart change events (see bug
1059
          report 690865);
1060
        - added pieIndex parameter to tooltip and URL generators for
1061
          pie charts;
1062
        - fixed bug in getLastMillisecond() method for the Second
1063
          class and the getFirstMillisecond() method for the Year
1064
          class (picked up in JUnit tests);
1065
        - in TextTitle, changed width used for relative spacing to fix
1066
          bug 703050;
1067

    
1068
##### Version 0.9.6 (17-Feb-2003) Bug fixes:
1069
        - fixed null pointer exception in DefaultCategoryDataset;
1070
        - fixed update problem for PaintTable, StrokeTable and
1071
          ShapeTable objects;
1072
        - added methods to control colors in PiePlot (these were
1073
          inadvertantly removed in the changes made for 0.9.5);
1074
        - fixed auto-range update problem for secondary axis;
1075
        - fixed missing category labels in the overlaid category plot;
1076
        - fixed constructors for symbolic axes;
1077
        - corrected error in Javadoc generation (Ant script);
1078

    
1079
##### Version 0.9.5 (6-Feb-2003) 
1080

    
1081
PLEASE NOTE THAT MAJOR CHANGES TO THE
1082
        JFREECHART API HAVE BEEN MADE IN THIS RELEASE!
1083

    
1084
        - added support for secondary axes, datasets and renderers;
1085
        - added new data interfaces (Value, Values, Values2D,
1086
          KeyedValues and KeyedValues2D) and incorporated these into
1087
          the existing PieDataset and CategoryDataset interfaces.
1088
        - modified the CategoryDataset interface to be more
1089
          symmetrical, data is organised in rows and columns (as
1090
          before) but can now be accessed by row/column index or
1091
          row/column key.
1092
        - added support for reading PieDatasets and CategoryDatasets
1093
          from XML files.
1094
        - created separate packages for the axes
1095
          (com.jrefinery.chart.axis), plots (com.jrefinery.chart.plot)
1096
          and renderers (com.jrefinery.chart.renderer).
1097
        - series attributes (paint, outline paint, stroke and shape)
1098
          are now controlled by the renderer classes using lookup
1099
          tables.  Introduced the DrawingSupplier interface (and
1100
          DefaultDrawingSupplier class) which is used to populate the
1101
          lookup tables from a common source (necessary to coordinate
1102
          complex combined charts).
1103
        - the chart legend can now display shapes corresponding to
1104
          series.
1105
        - moved responsibility for category distribution to the
1106
          CategoryAxis class, which tidies up the code in the
1107
          CategoryPlot classes.
1108
        - gridlines are now controlled by the CategoryPlot and XYPlot
1109
          classes, not the axes (included in this change is the
1110
          addition of gridlines for the CategoryPlot domain values).
1111
        - changed the list of titles in the JFreeChart class to a
1112
          title and a list of subtitles.
1113
        - added new renderers for XYPlot (XYBubbleRenderer and
1114
          YIntervalRenderer).
1115
        - modified Gantt chart to display sub-tasks.
1116
        - added ContourPlot class (still experimental) by David
1117
          M. O'Donnell.
1118
        - introduced new MovingAverage class.
1119
        - ChartMouseEvent now includes source chart.
1120
        - numerous bug fixes.
1121
        - lots of Javadoc updates.
1122

    
1123
##### Version 0.9.4 (18-Oct-2002)  
1124

    
1125
Added a new stacked area chart (contributed by Dan
1126
        Rivett) and a compass plot (contributed by Bryan Scott).  Updated
1127
        the ThermometerPlot class. Added a new XYDotRenderer for scatter
1128
        plots. Modified combined and overlaid plots to use the series colors
1129
        specified in the sub plot rather than the parent plot (this makes it
1130
        easier to align the colors in the legend).  Added Regression class
1131
        for linear and power regressions.  BasicTimeSeries can now
1132
        automatically drop "old" data.  Some clean-up work in the code for
1133
        tooltips and the event listener mechanism.  Richard Atkinson has
1134
        incorporated some useful extensions for servlets/JSP developers.
1135

    
1136
        Ran Checkstyle and corrected issues reported for most classes.
1137
        Checkstyle is a free utility that you can download from:
1138

    
1139
            http://checkstyle.sourceforge.net
1140

    
1141
        Fixed bugs and updated documentation.
1142

    
1143
        API changes include:
1144
        - added tickMarkPaint to Axis constructor (also affects
1145
          subclasses);
1146
        - added getLegendItems() to Plot, and deprecated
1147
          getLegendItemLabels();
1148
        - added getLegendItem(int) to XYItemRenderer and
1149
          CategoryItemRenderer.
1150
        - most 'protected' member variables have been changed to
1151
          'private'.
1152

    
1153
##### Version 0.9.3 (4-Sep-2002) 
1154

    
1155
- Added multiple pie charts based on `CategoryDataset`;
1156
- Updated logarithmic axes;
1157
- Improved URL support for image map generation;
1158
- Moved the `com.jrefinery.data` package from JCommon to JFreeChart. 
1159
- Added simple framework for chart annotations;
1160
- Improved control over renderers;
1161
- Duplicate x-values now allowed in `XYSeries`; 
1162
- Optional category label skipping in category axes; 
1163
- Added `CategoriesPaint` attribute to `AbstractCategoryItemRenderer`;
1164
- Added new attributes to `MeterPlot` class;
1165
- Updated 3D pie chart to observe start angle and direction, and also foreground alpha < 1.0;
1166
- Improved Javadoc comments;
1167
- New demo applications, including: `AnnotationDemo1`, `EventFrequencyDemo`, `JDBCCategoryChartDemo`, `JDBCPieChartDemo`, `JDBCXYChartDemo` and `MinMaxCategoryPlotDemo`.
1168

    
1169
Bug fixes:
1170
- negative percentages on `PiePlot`;
1171
- added listener notification to `setXXXAxis(...)` methods;
1172
- fixed `DomainInfo` method name clash;
1173
- added `DomainIsPointsInTime` flag to `TimeSeriesCollection` to give better control over auto range on axis for time series charts;
1174
- axis margins for date axes are no longer hard-coded;
1175
- fix for ordering of categories in `JdbcCategoryDataset`;
1176
- added check for `null` axis in mouse click handler.
1177

    
1178
The CVS repository at SourceForge has also been restructured to match the distribution directory layout.
1179

    
1180

    
1181
##### Version 0.9.2 (28-Jun-2002) 
1182

    
1183
- `PiePlot` now has `startAngle` and `direction` attributes;
1184
- added support for image map generation;
1185
- added a new `Pie3DPlot` class;
1186
- added label drawing code to bar renderers;
1187
- added optional range markers to horizontal number axis;
1188
- added bar clipping to avoid PRExceptions in bar charts; 
1189
- `JFreeChartDemo` has been modified and now includes examples of the dial and thermometer plots.
1190

    
1191
######Bug fixes
1192

    
1193
- auto range for `VerticalNumberAxis` when zero is forced to be included in the range;
1194
- fixed null pointer exception in `StackedVerticalBarRenderer3D`;
1195
- added get/set methods for min/max chart drawing dimensions in `ChartPanel`;
1196
- `HorizontalIntervalBarRenderer` now handles single category;
1197
- `verticalTickLabels` now possible in `HorizontalNumberAxis3D`;
1198
- removed unnecessary imports;
1199

    
1200

    
1201
##### Version 0.9.1 (14-Jun-2002) 
1202

    
1203
Bug fixes and Javadoc updates.
1204

    
1205
- fixed auto range calculation for category plots;
1206
- fixed event notification for `XYPlot`;
1207
- fixed auto axis range for Gantt charts;
1208
- check for null popup menu in `ChartPanel.mouseDragged`;
1209
- new checks for null info in renderers;
1210
- range markers now drawn only if in visible axis range;
1211

    
1212

    
1213
##### Version 0.9.0 (7-Jun-2002) 
1214

    
1215
- new plots including an area chart, a horizontal 3D bar chart, a Gantt chart 
1216
  and a thermometer chart;
1217
- combination plots have been reworked to provide a simpler framework, and 
1218
  extends to allow category plots to be combined;
1219
- there is now a facility to add a `ChartMouseListener` to the `ChartPanel` 
1220
  (formerly `JFreeChartPanel`);
1221
- an interactive zooming feature (experimental at this point) is now available 
1222
  for `XYPlots`;
1223
- a new Polish translation has been added;
1224
- several fixes have been applied to the default tool tip generators;
1225
- a workaround has been added to fix the alignment between time series charts 
1226
  and the date axis;  
1227
- there are some improvements to the `VerticalLogarithmicAxis` class, and now a 
1228
  corresponding `HorizontalLogarithmicAxis` class;  
1229
- additional demonstration applications have been added;
1230
- fixed the popup menu bug.
1231

    
1232

    
1233
##### Version 0.8.1 (5-Apr-2002) 
1234

    
1235
- Localised resource bundles for French, German and Spanish languages (thanks to 
1236
Anthony Boulestreau, Thomas Meier and Hans-Jurgen Greiner for the translations);  
1237
- an area XY plot and meter chart contributed by Hari;
1238
- symbol charts contributed by Anthony Boulestreau;
1239
- an improved `CandleStickRenderer` class from Sylvain Vieujot;
1240
- updated servlet code from Bryan Scott;
1241
- `XYItemRenderers` now have a change listener mechanism and therefore do not 
1242
have to be immutable;
1243
- additional demonstration applications for individual chart types;
1244
- minor bug fixes.
1245

    
1246

    
1247
##### Version 0.8.0 (22-Mar-2002) 
1248

    
1249
- all the category plots are now controlled through the one class (`CategoryPlot`) with plug-in renderers;
1250
- added a `ResourceBundle` for user interface items that require localisation;
1251
- added a logarithmic axis class contributed by Mike Duffy and some new JDBC and servlet code contributed by Bryan Scott;
1252
- updated the JCommon class library to improve handling of time periods in different time zones.
1253

    
1254

    
1255
##### Version 0.7.4 (6-Mar-2002) 
1256

    
1257
- bug fixes in the JCommon Class Library; 
1258
- various Javadoc comment updates;  
1259
- some minor changes to the code; 
1260
- added new domain name (http://www.object-refinery.com) in the source headers.
1261

    
1262

    
1263
##### Version 0.7.3 (14-Feb-2002) 
1264

    
1265
Bug fixes.
1266

    
1267

    
1268
##### Version 0.7.2 (8-Feb-2002) 
1269

    
1270
- integrated the `WindPlot` code from Achilleus Mantzios;
1271
- added an optional background image for the `JFreeChart` class;
1272
- added an optional background image for the `Plot` class;
1273
- added alpha-transparency for the plot foreground and background;
1274
- added new pie chart label types that show values;
1275
- fixed a bug with the legend that results in a loop at small chart sizes;
1276
- added some tooltip methods that were missing from the previous version;
1277
- changed the `Insets` class on chart titles to a new `Spacer` class that will 
1278
allow for relative or absolute insets (the plan is to eventually replace all 
1279
`Insets` in the `JFreeChart` classes);  
1280
- fixed a bug in the `setAutoRangeIncludesZero` method of the `NumberAxis` class;
1281
- added the instructions that were missing from the copies of the GNU Lesser General Public Licence included with JFreeChart.
1282

    
1283

    
1284
##### Version 0.7.1 (25-Jan-2002) 
1285

    
1286
- added tooltips, crosshairs and zooming functions, thanks to Jonathan Nash and Hans-Jurgen Greiner
1287
  for contributing the code that these features are based on;
1288
- moved the combination charts into the package `com.jrefinery.chart.combination`;
1289
- made a number of other small API changes and fixed some bugs;
1290
- removed the Javadoc HTML from the download to save space (you can regenerate it from the source code if you need it).
1291

    
1292

    
1293
##### Version 0.7.0 (11-Dec-2001) 
1294

    
1295
- new combination plots developed by Bill Kelemen;
1296
- added Wolfgang Irler's servlet demo to the standard download;
1297
- the About window in the demo application now includes a list of developers that have contributed to the project.
1298

    
1299

    
1300
##### Version 0.6.0 (27-Nov-2001) 
1301

    
1302
- new plots including scatter plot, stacked bar charts and 3D bar charts; 
1303
- improved pie chart;
1304
- data interfaces and classes moved to the JCommon class library;
1305
- new properties to control spacing on bar charts;
1306
- new auto-tick mechanism;
1307
- `JFreeChartPanel` now incorporates buffering, and popup menu;
1308
- Javadocs revised;
1309
- fixed numerous bugs from version 0.5.6;  
1310
- demo application updated.
1311

    
1312

    
1313
CONTRIBUTORS
1314
------------
1315
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:
1316

    
1317
- Eric Alexander
1318
- Richard Atkinson
1319
- David Basten
1320
- David Berry
1321
- Chris Boek
1322
- Zoheb Borbora
1323
- Anthony Boulestreau
1324
- Jeremy Bowman
1325
- Nicolas Brodu
1326
- Jody Brownell
1327
- David Browning
1328
- Soren Caspersen
1329
- Thomas A Caswell
1330
- Chuanhao Chiu
1331
- Brian Cole
1332
- Pascal Collet
1333
- Martin Cordova
1334
- Paolo Cova
1335
- Greg Darke
1336
- Mike Duffy
1337
- Don Elliott
1338
- Rune Fauske
1339
- Jonathan Gabbai
1340
- Serge V. Grachov
1341
- Daniel Gredler
1342
- Joao Guilherme Del Valle
1343
- Hans-Jurgen Greiner
1344
- Nick Guenther
1345
- Aiman Han
1346
- Cameron Hayne
1347
- Martin Hoeller (xS+S)
1348
- Jon Iles
1349
- Wolfgang Irler
1350
- Sergei Ivanov
1351
- Nina Jeliazkova
1352
- Adriaan Joubert
1353
- Darren Jung
1354
- Xun Kang
1355
- Bill Kelemen
1356
- Norbert Kiesel
1357
- Petr Kopac
1358
- Gideon Krause
1359
- Dave Law;
1360
- Pierre-Marie Le Biot
1361
- Simon Legner
1362
- Arnaud Lelievre
1363
- Wolfgang Lenhard
1364
- Leo Leung
1365
- David Li
1366
- Yan Liu
1367
- Tin Luu
1368
- Craig MacFarlane
1369
- Achilleus Mantzios
1370
- John Matthews
1371
- Thomas Meier
1372
- Jim Moore
1373
- Jonathan Nash
1374
- Barak Naveh
1375
- David M. O'Donnell
1376
- Krzysztof Paz
1377
- Eric Penfold
1378
- Tomer Peretz
1379
- Xavier Poinsard
1380
- Andrzej Porebski
1381
- Viktor Rajewski
1382
- Eduardo Ramalho
1383
- Michael Rauch
1384
- Klaus Rheinwald
1385
- Cameron Riley
1386
- Dan Rivett
1387
- Lukasz Rzeszotarski
1388
- Scott Sams
1389
- Michel Santos
1390
- Thierry Saura
1391
- Patrick Schlott
1392
- Andreas Schneider
1393
- Christoph Schroeder
1394
- Jean-Luc SCHWAB
1395
- Bryan Scott
1396
- Tobias Selb
1397
- Darshan Shah
1398
- Mofeed Shahin
1399
- Michael Siemer
1400
- Pady Srinivasan
1401
- Greg Steckman
1402
- Roger Studner
1403
- Gerald Struck
1404
- Irv Thomae
1405
- Eric Thomas
1406
- Rich Unger
1407
- Daniel van Enckevort
1408
- Laurence Vanhelsuwe
1409
- Sylvain Vieujot
1410
- Jelai Wang
1411
- Mark Watson
1412
- Alex Weber
1413
- Richard West
1414
- Matthew Wright
1415
- Benoit Xhenseval
1416
- Christian W. Zuckschwerdt
1417
- Hari
1418
- Sam (oldman)
1419

    
1420
It is possible that I have missed someone on this list, if that applies to you, please e-mail me.
1421

    
1422
Dave Gilbert (david.gilbert@object-refinery.com)
1423

    
1424
JFreeChart Project Leader