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Remove the mark information from a spatial dataset.
unmark(X)
# S3 method for ppp
unmark(X)
# S3 method for splitppp
unmark(X)
# S3 method for psp
unmark(X)
# S3 method for ppx
unmark(X)An object of the same class as X
with any mark information deleted.
A point pattern (object of class "ppp"),
a split point pattern (object of class "splitppp"),
a line segment pattern (object of class "psp")
or a multidimensional space-time point pattern
(object of class "ppx").
Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Rolf Turner rolfturner@posteo.net
A `mark' is a value attached to each point in a spatial point pattern, or attached to each line segment in a line segment pattern, etc.
The function unmark is a simple way to
remove the marks from such a dataset.
ppp.object,
psp.object
hicks <- lansing[lansing$marks == "hickory", ]
# plot(hicks) # still a marked point pattern, but only 1 value of marks
# plot(unmark(hicks)) # unmarked
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