The model used is a simple random
walk where, for each simulation step,
agents (so-called walkers) choose a random direction and step forward.
The Netlogo model specification is available
here.
The exchanged data will be here the walkers positions (x,y) the same
for input and output. In this simplistic case, the model exchange
theses
data with itself (i.e. its input port correspond to its output port).
Since not very useful for simulation results, this
example allows to introduce the very first concepts and their
implementation. More evolved coupling in the
other
examples.