unique.ppp

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Extract Unique Points from a Spatial Point Pattern

Removes any points that are identical to other points in a spatial point pattern.

Keywords
methods, spatial
Usage
## S3 method for class 'ppp':
unique(x, \dots)
Arguments
x
A spatial point pattern (object of class "ppp").
...
Ignored.
Details

This is a method for the generic function unique for point pattern datasets (of class "ppp", see ppp.object).

Two points in a point pattern are deemed to be identical if their $x,y$ coordinates are the same, and their marks are also the same (if they carry marks). The Examples section illustrates how it is possible for a point pattern to contain a pair of identical points.

This function removes duplicate points in x, and returns a point pattern.

Value

  • Another point pattern object.

See Also

ppp.object, duplicated.ppp, multiplicity.ppp

Aliases
  • unique.ppp
Examples
X <- ppp(c(1,1,0.5), c(2,2,1), window=square(3))
   unique(X)
Documentation reproduced from package spatstat, version 1.27-0, License: GPL (>= 2)

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