javaOctave

[Bryant Chhun]

Hi Octave community,

I have a java application/GUI that should send data to Octave, perform calculations, and then receive the result.

I've tried javaOctave as described here (https://www.gnu.org/software/octave/doc/interpreter/Java-Interface.html).  My current problem is described below, but a general problem is that the wiki was hosted through kenai, which Oracle decommissioned not long ago.  At some point i'll give the other suggested library, joPAS, a go...

For those familiar with javaOctave: my current problem is that Octave does not seem to recognize its own data types.  Below is a stack trace from a script run through beanshell.  This same error occurs when trying to pass an OctaveDouble to the OctaveEngine.

Target exception: dk.ange.octave.exception.OctaveParseException: Unknown type, class dk.ange.octave.type.OctaveString

dk.ange.octave.exception.OctaveParseException: Unknown type, class dk.ange.octave.type.OctaveString

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at dk.ange.octave.exec.OctaveExec.reInstantiateException(OctaveExec.java:183)

at dk.ange.octave.exec.OctaveExec.getFromFuture(OctaveExec.java:164)

at dk.ange.octave.exec.OctaveExec.eval(OctaveExec.java:131)

at dk.ange.octave.io.OctaveIO.set(OctaveIO.java:56)

at dk.ange.octave.OctaveEngine.put(OctaveEngine.java:139)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at bsh.Reflect.invokeMethod(Reflect.java:131)

at bsh.Reflect.invokeObjectMethod(Reflect.java:77)

at bsh.Name.invokeMethod(Name.java:852)

at bsh.BSHMethodInvocation.eval(BSHMethodInvocation.java:69)

at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:96)

at bsh.BSHPrimaryExpression.eval(BSHPrimaryExpression.java:41)

at bsh.Interpreter.run(Interpreter.java:471)

at java.lang.Thread.run(Unknown Source)

Caused by: dk.ange.octave.exception.OctaveParseException: Unknown type, class dk.ange.octave.type.OctaveString

at dk.ange.octave.io.OctaveIO.write(OctaveIO.java:182)

at dk.ange.octave.io.OctaveIO.write(OctaveIO.java:195)

at dk.ange.octave.io.DataWriteFunctor.doWrites(DataWriteFunctor.java:53)

at dk.ange.octave.exec.OctaveWriterCallable.call(OctaveWriterCallable.java:56)

at dk.ange.octave.exec.OctaveWriterCallable.call(OctaveWriterCallable.java:27)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknobsh % wn Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

... 1 more

Any advice is appreciated!

Best

Bryant