discretise: Generate Heat Map of Community
In traitecoevo/Revolve: Adaptive Dynamics toolkit for R

Turn model output into data to be plotted by image.

1	discretise(res, xr = NULL, nx = 101, sample = 10)

`res`	List of model states over time
`xr`	Range of x values (if ommited will be fit to the data)
`nx`	Number of x points to discretise over
`sample`	Thin the time axis by this amount (10 means take one point every 10 time steps). This may not be ideal where time does not proceed in even sized steps.