JavaOctave

A bridge from Java to Octave, useful if you want to do some Octave calculations from inside a Java application.

The code is licensed under Apache License, Version 2.0.

Download the current javaoctave-0.6.1.jar, it was released 2010-03-10. See the changelog for changes.

JavaOctave depends only on commons-logging.

Mailing List

If you have questions send them to the General Discussion mailing list

Archive of mailing list

Frequently Asked Questions

• FAQ - engine crash with syntactically incorrect command
• FAQ - octave not found
• FAQ - java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory

Examples

• Simple example of JavaOctave usage
• Simple example of solving an ODE

Very simple example showing how to calculate the integral of sqrt(1-x^2) over the interval from 0 to 1. The result should be pi/4 as it is the area of a quarter of the unit circle.

 OctaveEngine octave = new OctaveEngineFactory().getScriptEngine();
 octave.put("fun", new OctaveString("sqrt(1-t**2)"));
 octave.put("t1", Octave.scalar(0));
 octave.put("t2", Octave.scalar(1));
 octave.eval("result = lsode(fun, 0, [t1 t2])(2);");
 OctaveDouble result = octave.get(OctaveDouble.class, "result");
 octave.close();
 double integral = result.get(1);
 assertEquals(Math.PI / 4, integral, 1e-5);