The function domain
is generic,
with methods for many classes.
For a spatial object X
domain(X)
extracts the spatial domain in which X
is
defined.
For a two-dimensional object X
, typically domain(X)
is the same as Window(X)
.
The exception is that, if X
is a point pattern on a linear network
(class "lpp"
) or a point process model on a linear network
(class "lppm"
), then domain(X)
is the linear network
on which the points lie, while Window(X)
is the two-dimensional
window containing the linear network.