[kepler-dev] Reg. IF_THEN_ELSE loop

[Edward A. Lee]

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