Logical. If TRUE, issue a warning message if any
duplicated points were found.
Another point pattern object.
These are methods for the generic function unique for
point pattern datasets (of class "ppp", see
ppp.object, or class "ppx").
This function removes duplicate points in x,
and returns a point pattern.
Two points in a point pattern are deemed to be identical
if their \(x,y\) coordinates are the same,
and their marks are the same (if they carry marks).
This is the default rule: see duplicated.ppp
for other options.