Remove the mark information from a spatial dataset.
Usage
unmark(X)
## S3 method for class 'ppp':
unmark(X)
## S3 method for class 'splitppp':
unmark(X)
## S3 method for class 'psp':
unmark(X)
## S3 method for class 'ppx':
unmark(X)
Arguments
X
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 cl
Value
An object of the same class as X
with any mark information deleted.
Details
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.
data(lansing)
hicks <- lansing[lansing$marks == "hickory", ]
plot(hicks) # still a marked point pattern, but only 1 value of marks plot(unmark(hicks)) # unmarked