[kepler-dev] Help on "Composite R Data Reader Workflow" examples

[Dan Higgins]

Bin,
The problem with the 'Composite_R_DataReader_Example' workflow is
apparently a versioning problem in the saved workflow xml. When I try to
run this workflow from the File menu, I get an error when kepler reads
the line
<property name="command:"... value="RTerm --no-restore --no-save">

If I select "Skip element" the work flow appears, but if you 'Look
Inside' the R_Datatable_Reader' at the CommandLineActor, you will see
the the command parameter has not been set. (Double clicking on this
actor will show a dialog for setting the command parameter) If you then
enter the command string "RTerm --no-restore --no-save" and then Save
the workflow, it should fix your problem (It did for me!).

Let me know if this works for you.

Dan



bfu at netspace.net.au wrote:

>Dear Dan,
>Thanks for your response.
>The version I downloaded is the one for the windows Intsaller, which is
>Kepler alpha2 version on the web page.
>
>I installed it into c:\kepler directory. the jre I am using is a 
>jre1.5.0 version. Actually, some of the examples not run properly, especially
>those have file manipulation and database connections.Sometimes when I load
>a xml, it produced errors straight away. Sometimes when I tried to exe a work
>flow, it produce sort of "file not found" errors. I can give you more detail
>when I got back work.
>
>The R I installed is the latest binary version. And I test the R scirpt in
>that example ,finding that the script is fine. So I guess there might be 
>something wrong with the URI? 
>
>Thanks 
>
>Regards
>Bin
>  
>
>>Hello Bin,
>>
>>    It is always nice to hear that someone is checking out Kepler, but I 
>>am sorry that you are having problems!
>>
>>     The workflow you mentioned seems to work OK for me on a Windows XP 
>>machine (i.e. I cannot reporduce your error.) Our versions of Kepler are 
>>probably not identical, however. Are you using  the Web Start version 
>>(from http://kepler.ecoinformatics.org/downloads.html or one of the 
>>installers on that web page? Or are you working from the CVS source 
>>code? Are other Kepler examples working OK?
>>
>>    It looks like the problem is in the FileWrite method (befpre R is 
>>even called), but I don't see why that should be a problem. ????
>>
>>Dan Higgins
>>
>>
>>bfu at netspace.net.au wrote:
>>
>>    
>>
>>>Hi all,
>>>
>>>I am new in Kepler. Just installed it and tried to run the
>>>Composite R Data Reader Workflow examples.
>>>
>>>I installed R and set the Path enviroment, and as requested,put
>>>R.dll in Windows/System32 direcotry.
>>>
>>>but when I tried to run it , it always throws URI is not absolute
>>>Exception. I have checked the file is in the directory specified in
>>>the DataFileName and R_DATABASE_Reader parameters.
>>>
>>>Can anyone give me some hints or solutions on this?
>>>
>>>I am using Windowx XP professional. 
>>>
>>>Thanks in advance.
>>>
>>>Regards
>>>Bin
>>>
>>>(Below is the full exception tracks)
>>>java.lang.IllegalArgumentException: URI is not absolute
>>>
>>>	at java.io.File.<init>(Unknown Source)
>>>
>>>	at ptolemy.data.expr.FileParameter.asFile(FileParameter.java:192)
>>>
>>>	at ptolemy.actor.lib.io.LineWriter.postfire(LineWriter.java:190)
>>>
>>>	at org.geon.FileWrite.postfire(FileWrite.java:108)
>>>
>>>	at ptolemy.actor.AtomicActor.iterate(AtomicActor.java:284)
>>>
>>>	at
>>>ptolemy.actor.sched.StaticSchedulingDirector.fire
>>>      
>>>
>(StaticSchedulingDirector.java:161)
>  
>
>>>	at ptolemy.actor.CompositeActor.fire(CompositeActor.java:316)
>>>
>>>	at ptolemy.actor.CompositeActor.iterate(CompositeActor.java:541)
>>>
>>>	at
>>>ptolemy.actor.sched.StaticSchedulingDirector.fire
>>>      
>>>
>(StaticSchedulingDirector.java:161)
>  
>
>>>	at ptolemy.actor.CompositeActor.fire(CompositeActor.java:316)
>>>
>>>	at ptolemy.actor.Manager.iterate(Manager.java:519)
>>>
>>>	at ptolemy.actor.Manager.execute(Manager.java:295)
>>>
>>>	at ptolemy.actor.Manager.run(Manager.java:852)
>>>
>>>	at ptolemy.actor.Manager$2.run(Manager.java:901)
>>>
>>>
>>>
>>>------------------------------------------------------------
>>>This email was sent from Netspace Webmail: http://www.netspace.net.au
>>>
>>>_______________________________________________
>>>kepler-dev mailing list
>>>kepler-dev at ecoinformatics.org
>>>http://www.ecoinformatics.org/mailman/listinfo/kepler-dev
>>> 
>>>
>>>      
>>>
>>-- 
>>*******************************************************************
>>Dan Higgins                                  higgins at nceas.ucsb.edu
>>http://www.nceas.ucsb.edu/    Ph: 805-892-2531
>>National Center for Ecological Analysis and Synthesis (NCEAS) 
>>735 State Street - Room 205
>>Santa Barbara, CA 93195
>>*******************************************************************
>>
>>
>>    
>>
>
>
>
>
>
>------------------------------------------------------------
>This email was sent from Netspace Webmail: http://www.netspace.net.au
>  
>


-- 
*******************************************************************
Dan Higgins                                  higgins at nceas.ucsb.edu
http://www.nceas.ucsb.edu/    Ph: 805-892-2531
National Center for Ecological Analysis and Synthesis (NCEAS) 
735 State Street - Room 205
Santa Barbara, CA 93195
*******************************************************************

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