[kepler-users] Problem with MatlabExpression

Tue Mar 24 12:18:20 PDT 2015

Hi Daniel,
Many thanks for the speedy reply - that has fixed the problem !

Thanks again,
Bill

On Tue, Mar 24, 2015 at 2:06 PM, Daniel Crawl <danielcrawl at gmail.com> wrote:

>
> Hi Bill,
>
> The Matlab actor in Kepler 2.4 has a bug that prevents more than
> one instance from being added to the canvas. This has been fixed
> in Kepler svn and you get can this version by running:
>
> mkdir kepler.modules
> cd kepler.modules
> svn co https://code.kepler-project.org/code/kepler/trunk/modules/
> build-area
> cd build-area
> ant change-to -Dsuite=kepler
> ant run
>
> Documentation about getting Kepler from svn can be found here:
>
> https://kepler-project.org/developers/teams/build/systems/build-system/
> extension-build-system
>
>   --dan
>
>
> On 3/24/15 8:00 AM, William Hunt wrote:
>
>> I'm having some problems getting the MatlabExpression actor to work in
>> Kepler.  I am running the latest version of Kepler, downloaded
>> yesterday, and I did the module upgrades recommended when I first ran
>> the program.    I am running on a Mac with OS X version 10.10.2., with
>> Matlab R2015a installed.  I believe I have followed the instructions for
>> setting the environment variable required by the MatlabExpression actor,
>> and I am able to run the MatlabExpression Demo supplied, which would
>> think indicates the configuration is ok.  However, if I create a new
>> workflow, and add a MatlabExpression actor to it, I get an error dialog
>> box.  I've copied the text of the dialog, as well as the associated
>> stack trace and console output at the end of the email.
>>
>> I get the same behaviour if I restart Kepler, and attempt to add two
>> MatlabExpression actors to a new workspace - the first one seems to add
>> ok, but the second gives the same error.  If I delete the first actor,
>> any subsequent attempts to add a MatlabExpresion actor fail in the same
>> way, even if a new workflow has been created.
>>
>> Is this a bug, or am I doing something wrong ?  Should I be able to add
>> two MatlabExpression actors ?
>>
>> Thanks,
>>
>> Bill
>>
>> Text of error dialog :
>>
>> *Change Failed  Cannot create entity without class name. In [external
>> stream]  at line 2 and column 26*
>>
>>
>> If I click the Display Stack Trace button on the dialog, I get this :
>>
>> com.microstar.xml.XmlException: Cannot create entity without a class
>> name. in [external stream] at line 2 and column 26
>> at ptolemy.moml.MoMLParser._checkForNull(MoMLParser.java:4013)
>> at ptolemy.moml.MoMLParser._createEntity(MoMLParser.java:4194)
>> at ptolemy.moml.MoMLParser.startElement(MoMLParser.java:2697)
>> at com.microstar.xml.XmlParser.parseElement(XmlParser.java:921)
>> at com.microstar.xml.XmlParser.parseContent(XmlParser.java:1104)
>> at com.microstar.xml.XmlParser.parseElement(XmlParser.java:924)
>> at com.microstar.xml.XmlParser.parseDocument(XmlParser.java:481)
>> at com.microstar.xml.XmlParser.doParse(XmlParser.java:159)
>> at com.microstar.xml.XmlParser.parse(XmlParser.java:132)
>> at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1540)
>> at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1512)
>> at ptolemy.moml.MoMLParser.parse(MoMLParser.java:1668)
>> at ptolemy.moml.MoMLChangeRequest._execute(MoMLChangeRequest.java:289)
>> at ptolemy.kernel.util.ChangeRequest.execute(ChangeRequest.java:171)
>> at ptolemy.kernel.util.NamedObj._executeChangeRequests(
>> NamedObj.java:2559)
>> at ptolemy.kernel.util.NamedObj.executeChangeRequests(NamedObj.java:725)
>> at ptolemy.kernel.util.NamedObj.requestChange(NamedObj.java:1776)
>> at ptolemy.actor.CompositeActor.requestChange(CompositeActor.java:1957)
>> at
>> ptolemy.vergil.basic.EditorDropTargetListener.drop(
>> EditorDropTargetListener.java:394)
>> at java.awt.dnd.DropTarget.drop(DropTarget.java:434)
>> at
>> sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(
>> SunDropTargetContextPeer.java:519)
>> at
>> sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(
>> SunDropTargetContextPeer.java:832)
>> at
>> sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(
>> SunDropTargetContextPeer.java:756)
>> at sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:30)
>> at java.awt.Component.dispatchEventImpl(Component.java:4633)
>> at java.awt.Container.dispatchEventImpl(Container.java:2142)
>> at java.awt.Component.dispatchEvent(Component.java:4604)
>> at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
>> at
>> java.awt.LightweightDispatcher.processDropTargetEvent(
>> Container.java:4353)
>> at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4204)
>> at java.awt.Container.dispatchEventImpl(Container.java:2128)
>> at java.awt.Window.dispatchEventImpl(Window.java:2492)
>> at java.awt.Component.dispatchEvent(Component.java:4604)
>> at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717)
>> at java.awt.EventQueue.access$400(EventQueue.java:82)
>> at java.awt.EventQueue$2.run(EventQueue.java:676)
>> at java.awt.EventQueue$2.run(EventQueue.java:674)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at
>> java.security.AccessControlContext$1.doIntersectionPrivilege(
>> AccessControlContext.java:86)
>> at
>> java.security.AccessControlContext$1.doIntersectionPrivilege(
>> AccessControlContext.java:97)
>> at java.awt.EventQueue$3.run(EventQueue.java:690)
>> at java.awt.EventQueue$3.run(EventQueue.java:688)
>> at java.security.AccessController.doPrivileged(Native Method)
>> at
>> java.security.AccessControlContext$1.doIntersectionPrivilege(
>> AccessControlContext.java:86)
>> at java.awt.EventQueue.dispatchEvent(EventQueue.java:687)
>> at
>> java.awt.EventDispatchThread.pumpOneEventForFilters(
>> EventDispatchThread.java:296)
>> at
>> java.awt.EventDispatchThread.pumpEventsForFilter(
>> EventDispatchThread.java:211)
>> at
>> java.awt.EventDispatchThread.pumpEventsForHierarchy(
>> EventDispatchThread.java:201)
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
>> at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
>> at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
>>
>> Also, the following lines are printed in the console :
>>
>>       [null] Error inside GetMomlFromLSID.getMoml(): Failed to set
>> _iteration to 1: ptolemy.kernel.util.NameDuplicationException: Attempt
>> to insert object named "iteration" into a container that already
>> contains an object with that name.
>>
>>       [null] Error creating alternateGetMoml!
>>
>>
>> _______________________________________________
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>> Kepler-users at kepler-project.org
>> http://lists.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users
>>
>>
>
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