[kepler-users] Invoking MATLAB interface

[Daniel Crawl]

Hi Peter,

On windows, make sure the PATH environment variable
includes both the Matlab bin and win32 directories. (Other
things to check: make sure those directories exist, and
see if you can run "matlab" from a cmd prompt).

I've noticed that when the Matlab actor can't find Matlab,
the exception it throws changes. The first one usually
describes the actual problem, but subsequent exceptions
are NoClassDefFoundError like the one in your email. Do
you get a different exception the first time you try to
run the workflow? If so, could you please send it to me?

Also, which version of Matlab do you have?

Thanks,

  --dan


Peter Li wrote:
> Hi all,
>
> I'm trying to use the MATLAB actor, but I get this error message when I try
> to run it. I'm running on windows XP and I've set the environment variables
> to include the MATLAB bin and its win32 folder. It says that it cant find
> the ptmatlab shared library but I can see ptmatlab.dll file in the
> Kepler-1.0.0\lib folder. I'm fairly new at Kepler, so please excuse me if
> this is a dumb question.
>
> ptolemy.kernel.util.IllegalActionException: There was a problem invoking the
> Ptolemy II Matlab interface.
> The interface has been tested under Windows and Linux.
> The interface requires that Matlab be installed on the local machine and
> that the ptmatlab shared library available.
> Refer to $PTII/ptolemy/matlab/makefile for more information.
>   in .<Unnamed Object>.MatlabExpression
> Because:
> java.lang.NoClassDefFoundError
>     at ptolemy.matlab.Expression.preinitialize(Expression.java:205)
>     at ptolemy.actor.Director.preinitialize(Director.java:865)
>     at
> ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:527)
>     at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1103)
>     at ptolemy.actor.Manager.preinitializeAndResolveTypes(Manager.java:913)
>     at ptolemy.actor.Manager.initialize(Manager.java:578)
>     at ptolemy.actor.Manager.execute(Manager.java:321)
>     at ptolemy.actor.Manager.run(Manager.java:1071)
>     at ptolemy.actor.Manager$3.run(Manager.java:1112)
> Caused by: java.lang.NoClassDefFoundError
>     at ptolemy.matlab.Expression.preinitialize(Expression.java:202)
>     ... 8 more
> Caused by: java.lang.NoClassDefFoundError
>     at ptolemy.matlab.Expression.preinitialize(Expression.java:202)
>     at ptolemy.actor.Director.preinitialize(Director.java:865)
>     at
> ptolemy.domains.sdf.kernel.SDFDirector.preinitialize(SDFDirector.java:527)
>     at ptolemy.actor.CompositeActor.preinitialize(CompositeActor.java:1103)
>     at ptolemy.actor.Manager.preinitializeAndResolveTypes(Manager.java:913)
>     at ptolemy.actor.Manager.initialize(Manager.java:578)
>     at ptolemy.actor.Manager.execute(Manager.java:321)
>     at ptolemy.actor.Manager.run(Manager.java:1071)
>     at ptolemy.actor.Manager$3.run(Manager.java:1112)
>
>   
> ------------------------------------------------------------------------
>
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