QN Plot

Charts with Swing

This chart implementation provides graphs of one or more functions as Swing components. The design was made to render large amounts of real-time data. Java 5 or newer is required. Please try the Web Start demonstration.

Properties

• Free software (3-clause BSD)
• Coordinates are of type BigDecimal for arbitrary-precision
• High performance
• All classes are completely thread-safe
• The axis have schemes to automatically choose stepsizes for the index

By example

// Deploy graph:
Graph graph = new InteractiveGraph();
jComponent.add(graph);

// Add function:
Function f = new Function("Example");
graph.addFunction(f);

// Define ten random coordinates:
int i = 10;
while (--i >= 0) {
	BigDecimal x = new BigDecimal(Math.random());
	BigDecimal y = new BigDecimal(Math.random());
	f.addPoint(x, y);
}

// Apply changes:
graph.render();
graph.repaint();

Resources

• Download everything form SourceForge.net
• API documentation
• Browse source code

Change log

Version 1.6

• GUI interaction

Version 1.5

• SVG export feature
• Handle external dependencies through reflection
• Minor code modifications and cleanup

Version 1.4

• Limit lines feature

Version 1.3

• CSV export feature

Version 1.2

• New RenderUtils

Version 1.1

• Zoom feature
• Step function support
• Implement Printable
• New LinearTimeIndexScheme
• Zig-zag feature
• Antialiasing by default

Thank you

• JAVA.NET Community
• Tamson Instruments bv for the finance
• Apache Batik for the SVG generator
• Danny Allen for the icons

TODO

• Interpolation
• Implement scatterplot and histogram
• Create a Java Bean class
• i18n