unmark

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Percentile

Remove Marks

Remove the mark information from a spatial dataset.

Keywords
manip, spatial
Usage
unmark(X)
 ## S3 method for class 'ppp':
unmark(X)
 ## S3 method for class 'splitppp':
unmark(X)
 ## S3 method for class 'psp':
unmark(X)
Arguments
X
A point pattern (object of class "ppp"), a split point pattern (object of class "splitppp"), or a line segment pattern (object of class "psp").
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.

Value

  • An object of the same class as X with any mark information deleted.

See Also

ppp.object, psp.object

Aliases
  • unmark
  • unmark.ppp
  • unmark.splitppp
  • unmark.psp
Examples
data(lansing)
  hicks <- lansing[lansing$marks == "hickory", ]
  plot(hicks)  # still a marked point pattern, but only 1 value of marks
  plot(unmark(hicks)) # unmarked
Documentation reproduced from package spatstat, version 1.18-1, License: GPL (>= 2)

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