How to show the labeled patches: "global" (single map), "all" (every class as facet), or a vector with the specific classes one wants to show (every selected class as facet).
directions
The number of directions in which patches should be
connected: 4 (rook's case) or 8 (queen's case).
labels
Logical flag indicating whether to print or not to print patch labels.
nrow, ncol
Number of rows and columns for the facet.
Details
The functions plots the landscape with the patches labeled with the
corresponding patch id.