This function is used primarily for plotting covariates, for which the plot.mask function has greater functionality than plot.traps. It also generates pretty maps of grid cells.
Usage
as.mask(x)
Value
If x is a single-session traps object --
an object of class c("mask", "data.frame")
If x is a multi-session traps object --
an object of class c("mask", "list"), for which each component is a
single-session mask.
Arguments
x
an object of class 'traps'
Details
A mask derived by coercion with as.mask may behave
unpredictably e.g., in secr.fit.