Simulation corresponding to Fig 7D.

This simulation is of an anisotropic triangular lattice on a cone frustum with a couple of initial columns (masked with white noise). The cone is mapped to a flat plane here. The inner boundary (closest to origin) and the outer boundary (farthest from origin) are no-flux boundaries. The remaining two boundaries are periodic. There are two hundred fifty initial rows and approximately one hundred fifty columns. (ZIP)