spatstat (version 1.23-1)

Extract.splitppp: Extract or Replace Sub-Patterns

Description

Extract or replace some of the sub-patterns in a split point pattern.

Usage

## S3 method for class 'splitppp':
[(x, ...)
  ## S3 method for class 'splitppp':
[(x, ...) <- value

Arguments

x

An object of class "splitppp", representing a point pattern separated into a list of sub-patterns.

...

Subset index. Any valid subset index in the usual Rsense.

value

Replacement value for the subset. A list of point patterns.

Value

• Another object of class "splitppp".

Details

These are subset methods for the class "splitppp".

The argument x should be an object of class "splitppp", representing a point pattern that has been separated into a list of sub-patterns. It is created by split.ppp. The methods extract or replace a designated subset of the list x, and return an object of class "splitppp".

See Also

split.ppp, plot.splitppp, summary.splitppp

Examples

data(amacrine)  # multitype point pattern
  y <- split(amacrine)
  y[1]
  y["off"]
  y[1] <- list(runifpoint(42, amacrine$window))