The two easiest solutions are probably to either keep a map Geometry-->Agent somewhere  or to subclass MasonGeometry to add a field linking it back to the Agent.
First is probably better since you don't have to worry about making Agent serializable as well (although you might not care)

On Tue, Mar 22, 2016 at 1:56 PM Nick Malleson <[log in to unmask]> wrote:
Hi all,

This might have an easy answer, apologies if I have missed something on the list.

I am using a GeomVectorField to store my agents. I need to be able to get back to the original Agent object, not just its associated MasonGeometry. I create agents and add them to the GeomVectorField a bit like this:

Agent a = new Agent();

That basically works fine, but now I want to be able to get back to the underlying agent. I guess I could maintain a separate List of agents as well as the GeomVectorField, or I could add the agent to its MasonGeometry's userData field.

Any opinions on which would be best? How else have people stored their agents and their geometries using geomason?

Thanks in advance,