R: Remove Marks

unmark {spatstat.geom} | R Documentation

## Remove Marks

### Description

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 class `"ppx"`).

### 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.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Rolf Turner r.turner@auckland.ac.nz

### See Also

`ppp.object`, `psp.object`

### 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

[Package spatstat.geom version 2.2-0 Index]