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javaOctave


From: Bryant Chhun
Subject: javaOctave
Date: Mon, 12 Jun 2017 14:41:36 -0700

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

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