[kepler-dev] Reg. IF_THEN_ELSE loop

Tue Mar 28 13:14:12 PST 2006

I've attached a version of your model that doesn't use any Kepler
features, and it works fine for me...

I suspect the problem is with the org.sdm.spa.StringConst actor...
I'm not familiar with this actor, but based on the XML you sent, it
looks rather peculiar.  It seems that the value of the string constant
is given by a FileParameter (?).

Note that with the Multiplexor actor (vs. Select), you can use SDF.
These are not actually equivalent, since the Multiplexor consumes one
data token from every input channel on every firing. If you are giving
a constant on this channel, then it doesn't matter. But if it's not
constant, then it does.

Edward

At 12:16 PM 3/28/2006, Sivagowri Swaminathan wrote:
>you are right. Here is the workflow I have created. Any help 
>regarding this is welcome.
>
>Thanx
>siva
>enclosed>> mux.xml
>
>>From: "Edward A. Lee" <eal at eecs.berkeley.edu>
>>To: "Sivagowri Swaminathan" <sivagowri at hotmail.com>
>>CC: Kepler-dev at ecoinformatics.org
>>Subject: Re: [kepler-dev] Reg. IF_THEN_ELSE loop
>>Date: Tue, 28 Mar 2006 09:08:40 -0800
>>
>>
>>Instead of describing the model in words, how about sending it as
>>an attachment?  This would make it much easier to understand :-)
>>
>>Edward
>>
>>At 09:48 PM 3/27/2006, Sivagowri Swaminathan wrote:
>>>Hi Edward and Dan
>>>
>>>Thanks for your suggestions. Using Edwards suggestion, I used a 
>>>boolean switch [boolean mux also worked] to direct the tokens onto 
>>>two different paths.
>>>This is my construction:
>>>1. I used a ramp for incrementing from 1 .
>>>2. A constant value = 3 was compared to the ramp value using 
>>>boolean equals actor.
>>>3. The output from the equals actor was directed to a boolean mux, 
>>>which had 2 string constants
>>>'true output' and 'false output' as inputs to the mux.
>>>4. The output of the mux is connected to a text display.
>>>
>>>5. as per Dan's suggestion, I used a PN director. [Initially I 
>>>used a sdf director.]
>>>
>>>since 1 != 3, the output of mux showed 'false output' on the 
>>>display and it stopped.
>>>But the ramp was not incremented at all. I expected a series of 
>>>false, false, true, false ... in the display but I received only one output.
>>>
>>>If I used an SDF director set to 20 iterations, I get the first 
>>>output only. If I used a PN director, I get an error message 
>>>stating that the queue size exceeded the maximum limit.
>>>
>>>questions
>>>
>>>1. I want the output as when the ramp gets incremented, what 
>>>director I should use?
>>>2. How do I get documentation for the actors? the right-click, get 
>>>Documentation doesn't work and errors out saying I need to get the 
>>>document component. Where to get this component from?
>>>
>>>alternatively, I used 'openActor' to see the source code and 
>>>inferred what the actor tries to do. It helped me a lot to 
>>>understand the actor.
>>>
>>>Thanx
>>>Siva
>>>
>>>
>>>>From: "Edward A. Lee" <eal at eecs.berkeley.edu>
>>>>To: "Sivagowri Swaminathan" <sivagowri at hotmail.com>
>>>>CC: Kepler-dev at ecoinformatics.org
>>>>Subject: Re: [kepler-dev] Reg. IF_THEN_ELSE loop
>>>>Date: Mon, 27 Mar 2006 09:04:26 -0800
>>>>
>>>>
>>>>The BooleanToAnything actor can convert true/false into two
>>>>distinct strings.
>>>>
>>>>Alternatively, you can control a BooleanSwitch actor and route
>>>>tokens to one of two subsystems.
>>>>
>>>>A third alternative is to use the newly added Case actor,
>>>>in actor/hoc in the Ptolemy II default configuration...
>>>>I'm not sure whether this is visible in the Kepler library...
>>>>
>>>>Edward
>>>>
>>>>At 06:07 PM 3/26/2006, Sivagowri Swaminathan wrote:
>>>>>Hi all
>>>>>
>>>>>I have a problem implementing an if-then-else kind of workflow and would
>>>>>like to get help regarding the same.
>>>>>
>>>>>I want to implement a logic such as this:
>>>>>
>>>>>if some constant's value = x, then I need to display some message else I
>>>>>need to display some other msg.
>>>>>
>>>>>The comparator and the booleans equals actor(operator) actually outputs
>>>>>results such as true/false. how do I create an action based on the output
>>>>>from the actors?
>>>>>
>>>>>I running behind on a deadline and would like to get help on this asap.
>>>>>
>>>>>Thanx
>>>>>Siva
>>>>>
>>>>>
>>>>>_______________________________________________
>>>>>Kepler-dev mailing list
>>>>>Kepler-dev at ecoinformatics.org
>>>>>http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-dev
>>>>
>>>>------------
>>>>Edward A. Lee
>>>>Professor, Chair of the EE Division, Associate Chair of EECS
>>>>231 Cory Hall, UC Berkeley, Berkeley, CA 94720
>>>>phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
>>>>eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal
>>
>>------------
>>Edward A. Lee
>>Professor, Chair of the EE Division, Associate Chair of EECS
>>231 Cory Hall, UC Berkeley, Berkeley, CA 94720
>>phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
>>eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal
>
>
>

------------
Edward A. Lee
Professor, Chair of the EE Division, Associate Chair of EECS
231 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal  
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