Arguments
mask
Raster* object; Cells with NA in this object (or first layer of the object) are excluded
n
Integer. Number of points
p
Presence points (if provided, random points won't be in the same cells (as defined by mask)
ext
Exent; to restrict sampling to a spatial extent
extf
Numeric. Multiplyer to adjust the size of extent 'ext'. The default increases of 1.1 increases the extent a little
excludep
Logical. If TRUE, presence points are exluded from background
tryf
numeric > 1. Multiplyer used for initial sample size from which the requested sample size is extracted after removing rows NA points (outside of mask)
warn
integer. 2 or higher give most warnings. 0 or lower give no warnings if sample size n is not reached