## S3 method for class 'layered':
[(x, i, j, drop=FALSE, ...) ## S3 method for class 'layered':
[(x, i) <- value
## S3 method for class 'layered':
[[(x, i) <- value
"layered"
)."owin"
).i
specifies only a single layer
and drop=TRUE
, then the contents of this layer
will be returned."layered"
.layered
. The function [.layered
extracts a designated subset of a layered object.
It is a method for [
for the
class "layered"
.
The functions [<-.layered
and [[<-.layered
replace a designated subset or designated entry of the object by new
values. They are methods for [<-
and [[<-
for the "layered"
class.
The index i
specifies which layers will be retained.
It should be a valid subset index for the list of layers.
The index j
will be applied to each layer. It is typically
a spatial window (class "owin"
) so that each of the layers
will be restricted to the same spatial region.
Alternatively j
may be any subset index
which is permissible for the "["
method for each of the layers.
layered
example(layered)
L[-2]
L[, square(0.5)]
L[[3]] <- japanesepines
L
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