spatstat.geom (version 3.5-0)

Extract.solist: Extract or Replace Subset of a List of Spatial Objects

Description

Extract or replace some entries in a list of spatial objects, or extract a designated sub-region in each object.

Usage

# S3 method for solist
[(x, i, ...)
  # S3 method for solist
[(x, i) <- value
  # S3 method for solist
[[(x, i) <- value

Value

Another object of the same class as x.

Arguments

x

An object of class "solist" representing a list of two-dimensional spatial objects.

i

Subset index. Any valid subset index for vectors in the usual R sense, or a window (object of class "owin").

value

Replacement value for the subset. See Details.

...

Ignored.

Author

Adrian Baddeley , Rolf Turner and Ege Rubak

Details

These are methods for extracting and replacing subsets for the class "solist".

The argument x should be an object of class "solist" representing a list of two-dimensional spatial objects. See solist.

For the subset method, the subset index i can be either a vector index (specifying some elements of the list) or a spatial window (specifying a spatial sub-region).

For the replacement "[<-" method, i must be a vector index and value must be a list of spatial objects; the designated elements of x will be replaced by the corresponding elements of the list value.

For the replacement "[[<-" method, i must be a single integer, and value must be a spatial object.

If all entries of x belong to the same class, then in the replacement methods, a value of NA is automatically coerced to an NA object of the same class.

See Also

solist, plot.solist, summary.solist

Examples

   x <- solist(japanesepines, cells, redwood)
   x[2:3]
   x[square(0.5)]
   x[1] <- list(finpines)
   x[[1]] <- cells
   x[[3]] <- NA