Extract.lpp

0th

Percentile

Extract Subset of Point Pattern on Linear Network

Extract a subset of a point pattern on a linear network.

Keywords
manip, spatial
Usage
## S3 method for class 'lpp':
[(x, i, ...)
Arguments
x
A point pattern on a linear network (object of class "lpp").
i
Subset index. A valid subset index in the usual Rsense, indicating which points should be retained.
...
Ignored.
Details

This function extracts a designated subset of a point pattern on a linear network.

The function [.lpp is a method for [ for the class "lpp". It extracts a designated subset of a point pattern. The argument i should be a subset index in the usual Rsense: either a numeric vector of positive indices (identifying the points to be retained), a numeric vector of negative indices (identifying the points to be deleted) or a logical vector of length equal to the number of points in the point pattern x. In the latter case, the points (x$x[i], x$y[i]) for which subset[i]=TRUE will be retained, and the others will be deleted. Use the function unmark to remove marks from a marked point pattern.

Value

  • A point pattern on a linear network (of class "lpp").

See Also

lpp

Aliases
  • [.lpp
Examples
# Chicago crimes data - remove cases of assault
  chicago[marks(chicago) != "assault"]
Documentation reproduced from package spatstat, version 1.29-0, License: GPL (>= 2)

Community examples

Looks like there are no examples yet.