Re: [Swarm-Support] Problems creating input object from .scm

[Paul Johnson]

It is not clear what you are trying to do. The question refers to input 
object from scm, but the comment in the file is about creating output 
files. And you don't say if you mean output as a summary of results or 
output as a snapshot of the condition of the agents.

If you mean you want to save the state of your simulation into an scm 
file and then restart the simulation using those values, I have a couple 
of complete working examples you can look at. The newest 
ArtificialStockMarket does serialization, and the public opinion model 
does that too.  I believe I put in pretty much commentary in the readme 
files.

http://pj.freefaculty.org/Swarm/MySwarmCode/OpinionFormation/Opinion-2.0.1.tar.gz
http://ArtStkMkt.sourceforge.net

There are some examples on Lisp output in the WorkingExample directory 
as well:

http://pj.freefaculty.org/SwarmFaq/WorkingExampleCode/objc/LispSaveOutput.txt
http://pj.freefaculty.org/SwarmFaq/WorkingExampleCode/objc/LispInDoubles.txt

You choose lispOutDeep or lispOutShallow, depending on if you need to 
try to force a recursive search of an object and all the objects inside 
it, or just a set of IVARs (doubles, int, BOOL, like that).  Then in the 
classes you intend to save, you can write customized methods to override 
the default lispOutXXX methods. 

I wrote up a slide show about this topic, which we were calling 
Serialization. 

http://pj.freefaculty.org/Papers/Presentations/SwarmFest03/Sfest03_serialization.pdf

It is difficult to admit this, but when I was "knee deep" in this, it 
all seemed perfectly obvious to me. But, after not doing it for a year 
or so, I can see it requires some concentration.  I wish there were more 
personal payoff in writing up documentation, but there just isn't.

If you find broken links in my web pages, please let me know. I've been 
forced to migrate out of KU service altogether and bought space on 
Dreamhost.com.  Currently old links are redirecting, but you can go 
directly to http://pj.freefaculty.org.

pj

David Camacho Trujillo wrote:

> Hi dear Swarm community,
>
> My model runs fine under GUI and Batch mode, but I it can not open an external
> file (to read some data) utilizing "replicator2.pl",  (there are no crash, it
> just simply do not open the file and terminate).
>
> Usually to open that external file, (and to perform something on those data) I
> utilize a another object, from a separate class named "Input". I have try to
> create this class, similarly to the "Output" class from the tutorial. (the idea
> behind was that this "Input" class should be at a similar level into the whole
> model structure related to the dependencies ).  Therefore, this "Input-object"
> is created in the "buildObjects" method from the "modelSwarm".
>
> I have already try to create this class in a superior class than the
> "modelSwarm", so I try with on the "buildObjects" from the Batch and Observer
> classes, and same result: runs fine for GUI and Batch but not with 
> replicator2.pl
>
> In  "Parameter" class we do not have "buildObjects", and from the " .scm" file I
> have no idea how to call this class or pass the info.
> How to solve this?
> I work under suse 9.2, objective-c
>
> David
>
>
>
>
> _______________________________________________
> Support mailing list
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> http://www.swarm.org/mailman/listinfo/support
>  


--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
1541 Lilac Lane, Rm 504                              
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66044-3177           FAX: (785) 864-5700