Creating multiple networks

[Russell Lawrence]

Hello all,

I am trying to model a supply chain but am having difficulty trying to
create multiple information networks at the same time.

I have multiple base farmers trying to establish a network with all of
their elevators(distributors). What I would like to do is get a list of
all farmers and then have each one of them create a network to all of
the elevators. I have tried to emulate what was done in AE
SheepNetwork, however, instead of getRandomObjects(), I am using
getObjects() as I want all elevators to be in the network.

I am getting an error that says 'cannot cast 'Farmer 1' with class
'graingame2.Farmer' to class 'graingame2.Elevator'. Is there a way that
a network can be created between agents of different classes?

Here is the groovy code:

// Find all farmers in this context
        Context context = FindContext("Grain Game 2")
        Iterator list = context.getObjects(Farmer.class).iterator()

        // Loop over all of the elevators
        while (list.hasNext()) {

            // Every farmer establishes a link to every elevator
            IndexedIterable iter = GetObjects("Grain Game 2",
"graingame2.Elevator")
            Elevator elevator = list.next()
            CreateEdge("Grain Game 2/Network", this, neighbors.next(),
1.0)
            CreateEdge("Grain Game 2/Network", this, neighbors.next(),
1.0)

        }

Russell

----------------------------------------

Russell Lawrence
M.Sc. Candidate (Agricultural Economics)
College of Agriculture and Bioresources
Saskatoon, SK

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
Repast-interest mailing list
Repast-interest@...
https://lists.sourceforge.net/lists/listinfo/repast-interest

[Willem van Asperen]

Hi Russel,

What about:

Iterator farmerIter = context.getObjects(Farmer.class);
while (farmerIter.hasNext()) {
  Farmer farmer = (Farmer)farmerIter.next();
  Iterator elevatorIter = context.getObjects(Elevator.class);
  while (elevatorIter.hasNext()) {
    Elevator elevator = (Elevator)elevatorIter.next();
    CreateEdge("Grain Game 2/Network", farmer, elevator, 1.0);
  }
}

Willem

-----Original Message-----
From: Russell Lawrence [mailto:rjl864@...]
Sent: dinsdag 10 november 2009 5:06
To: repast-interest@...
Subject: [Repast-interest] Creating multiple networks

Hello all,

I am trying to model a supply chain but am having difficulty trying to
create multiple information networks at the same time.

I have multiple base farmers trying to establish a network with all of
their elevators(distributors). What I would like to do is get a list of
all farmers and then have each one of them create a network to all of
the elevators. I have tried to emulate what was done in AE
SheepNetwork, however, instead of getRandomObjects(), I am using
getObjects() as I want all elevators to be in the network.

I am getting an error that says 'cannot cast 'Farmer 1' with class
'graingame2.Farmer' to class 'graingame2.Elevator'. Is there a way that
a network can be created between agents of different classes?

Here is the groovy code:

// Find all farmers in this context
        Context context = FindContext("Grain Game 2")
        Iterator list = context.getObjects(Farmer.class).iterator()

        // Loop over all of the elevators
        while (list.hasNext()) {

            // Every farmer establishes a link to every elevator
            IndexedIterable iter = GetObjects("Grain Game 2",
"graingame2.Elevator")
            Elevator elevator = list.next()
            CreateEdge("Grain Game 2/Network", this, neighbors.next(),
1.0)
            CreateEdge("Grain Game 2/Network", this, neighbors.next(),
1.0)

        }

Russell

----------------------------------------

Russell Lawrence
M.Sc. Candidate (Agricultural Economics)
College of Agriculture and Bioresources
Saskatoon, SK

------------------------------------------------------------------------
------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008
30-Day
trial. Simplify your report design, integration and deployment - and
focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
Repast-interest mailing list
Repast-interest@...
https://lists.sourceforge.net/lists/listinfo/repast-interest



------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
Repast-interest mailing list
Repast-interest@...
https://lists.sourceforge.net/lists/listinfo/repast-interest

[David J. Barnes]

It might be worth taking advantage of the fact that generic types in
Java have added additional type security, such that you can often avoid
explicit casting. Coupled with the for-each version of the for loop it
should be possible to write Willem's code slightly more succinctly as:

for(Farmer farmer : context.getObjects(Farmer.class)) {
   for(Elevator elevator : context.getObjects(Elevator.class)) {
     CreateEdge("Grain Game 2/Network", farmer, elevator, 1.0);
   }
}

David


Willem van Asperen wrote:

> Hi Russel,
>
> What about:
>
> Iterator farmerIter = context.getObjects(Farmer.class);
> while (farmerIter.hasNext()) {
>   Farmer farmer = (Farmer)farmerIter.next();
>   Iterator elevatorIter = context.getObjects(Elevator.class);
>   while (elevatorIter.hasNext()) {
>     Elevator elevator = (Elevator)elevatorIter.next();
>     CreateEdge("Grain Game 2/Network", farmer, elevator, 1.0);
>   }
> }
>
> Willem
>
> -----Original Message-----
> From: Russell Lawrence [mailto:rjl864@...]
> Sent: dinsdag 10 november 2009 5:06
> To: repast-interest@...
> Subject: [Repast-interest] Creating multiple networks
>
> Hello all,
>
> I am trying to model a supply chain but am having difficulty trying to
> create multiple information networks at the same time.
>
> I have multiple base farmers trying to establish a network with all of
> their elevators(distributors). What I would like to do is get a list of
> all farmers and then have each one of them create a network to all of
> the elevators. I have tried to emulate what was done in AE
> SheepNetwork, however, instead of getRandomObjects(), I am using
> getObjects() as I want all elevators to be in the network.
>
> I am getting an error that says 'cannot cast 'Farmer 1' with class
> 'graingame2.Farmer' to class 'graingame2.Elevator'. Is there a way that
> a network can be created between agents of different classes?
>
> Here is the groovy code:
>
> // Find all farmers in this context
>         Context context = FindContext("Grain Game 2")
>         Iterator list = context.getObjects(Farmer.class).iterator()
>
>         // Loop over all of the elevators
>         while (list.hasNext()) {
>
>             // Every farmer establishes a link to every elevator
>             IndexedIterable iter = GetObjects("Grain Game 2",
> "graingame2.Elevator")
>             Elevator elevator = list.next()
>             CreateEdge("Grain Game 2/Network", this, neighbors.next(),
> 1.0)
>             CreateEdge("Grain Game 2/Network", this, neighbors.next(),
> 1.0)
>
>         }
>
> Russell
>
> ----------------------------------------
>
> Russell Lawrence
> M.Sc. Candidate (Agricultural Economics)
> College of Agriculture and Bioresources
> Saskatoon, SK
>
> ------------------------------------------------------------------------
> ------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
> 30-Day
> trial. Simplify your report design, integration and deployment - and
> focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Repast-interest mailing list
> Repast-interest@...
> https://lists.sourceforge.net/lists/listinfo/repast-interest
>
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Repast-interest mailing list
> Repast-interest@...
> https://lists.sourceforge.net/lists/listinfo/repast-interest

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
Repast-interest mailing list
Repast-interest@...
https://lists.sourceforge.net/lists/listinfo/repast-interest