Chart Construction Kit for the Java™ platform

JCCKit is written for the JDK™ 1.1.8 platform (except of a Graphics2D renderer). Thus, it is suitable for scientific Applets and for PDA's running a PersonalJava™ implementation.

JCCKit is an offspring of my lecture The Art of Developing Scientific Java Applets held at the University of Basel, Switzerland, in the winter semester 2002/03. See lecture 12 and 13 which explains the basic architecture of JCCKit.

Purpose and Features

The key features of JCCKit are:

• small (< 100Kb jar file)
• highly configurable due to a sophisticated configuration concept
• extensible (1/3 of all classes are interfaces or abstract classes.)
• automatic updating if data changes
• easy programming of dynamic charts and plots
• automatic rescaling if canvas size changes
• out-of-the-box applet for presenting static data on a web page without needing knowledge of the Java™ programming language.
• automatically generates a legend
• supports
  • logarithmic axes
  • non-numerical tic labels
  • different line styles, colors, and thicknesses
  • different symbols
  • different fonts, font styles, colors, and text orientations
  • vertical and horizontal error bars
  • vertical, horizontal, and stacked bar charts
• supported devices
  • AWT Graphics context
  • AWT Graphics2D context (needs Java™ 2 platform)
  • Off-Screen image creation (need J2SE 1.4 or higher) (see section 2.5 of the User Guide)
  • SVG (Scalable Vector Graphics)

All releases on the Download page include:

• Compiled classes for immediate use.
• Source code.
• Complete content of the JCCKit Home Page including
  • Examples
  • User Guide
  • API documentation

Release History

JCCKit V1.1

Features:

• GraphicsPlotCanvas: Double-buffering can be switched off to allow off-screen image creation.

Documentation:

• New example: Off-screen image creation
• Configuration Manual

JCCKit V1.0.1

Features:

• BarFactory: Allow bars going into negative direction.

JCCKit V1.0

Features:

• An annotation layer (with any kind of graphics or text) can be added to a Plot with the method setAnnotation()
• The coordinate system of a Plot instance can be changed with the method setCoordinateSystem().
• A graphical marker object can be add to GraphicsPlotCanvas with setMarker(). It will be drawn on top of the plot. Useful in the case of mouse interactions.
• Automatic tic calculation of linear AxisParameter improved.

Bugfixes:

• The method connect() of PlotCanvas and Plot no longer throws a NullPointerException if fed with null. Thus a Plot instance can be diconnected from a DataPlot just by connecting it with null.
• Class jcckit.renderer.Transformation transformed device independent coordinates incorrectly into Java coordinates as observed in Microsofts Java VM.
• Creating double buffers in GraphicsPlotCanvas caused exceptions if resized below zero.

JCCKit V0.999

Features:

• The Renderer for SVGPlotter, GraphicsPlotCanvas, and Graphics2DPlotCanvas are generated by a Factory Method (see method setRenderer()).
• Swing wrapper components for GraphicsPlotCanvas and Graphics2DPlotCanvas (see method getGraphicsJPanel())
• Non-numerical tic labels due to interface TicLabelFormat and class TicLabelMap.

JCCKit V0.99

Features:

• Graphics2DRenderer
• Removing methods insertAt and removeAt in Polygon, GraphicalComposite, and Curve
• AttributesHint and ShapeAttributesHint
• ConfigParameters with boolean type
• Changes in SimpleCurveFactory and SimpleCurve lead to different configuration parameters
• Plot.transform(): Backward transformation from DICS to DCS
• GraphicsPlotCanvas.mapCursorPosition(): Maps cursor position onto DICS
• ErrorBarFactory

Bugfixes:

• GraphicsRenderer: Rotated text does not appear on black background
• Plot: curve generation: Now correct hint propagation is implemented

Documentation:

• more examples
• User Guide continued

JCCKit V0.91

Features:

• More powerful Format class: Now allows plain text before and after format statement.

Bugfixes:

• Bug #726146: Legend
• Throw NullPointerException if a null is added to GraphicalComposite

Documentation:

• User Guide started

JCCKit V0.9