Extract the Domain of any Spatial Object
Given a spatial object such as a point pattern, in any number of dimensions, this function extracts the spatial domain in which the object is defined.
domain(X, ...) ## S3 method for class 'ppp' domain(X, ...) ## S3 method for class 'psp' domain(X, ...) ## S3 method for class 'im' domain(X, ...) ## S3 method for class 'ppx' domain(X, ...) ## S3 method for class 'pp3' domain(X, ...) ## S3 method for class 'quad' domain(X, ...) ## S3 method for class 'quadratcount' domain(X, ...) ## S3 method for class 'tess' domain(X, ...) ## S3 method for class 'layered' domain(X, ...) ## S3 method for class 'distfun' domain(X, ...) ## S3 method for class 'nnfun' domain(X, ...) ## S3 method for class 'funxy' domain(X, ...)
X |
A spatial object such as a point pattern (in any number of dimensions), line segment pattern or pixel image. |
... |
Extra arguments. They are ignored by all the methods listed here. |
The function domain
is generic.
For a spatial object X
in any number of dimensions,
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)
.
Exceptions occur for methods related to linear networks.
A spatial object representing the domain of X
.
Typically a window (object of class "owin"
),
a three-dimensional box ("box3"
), a multidimensional
box ("boxx"
) or a linear network ("linnet"
).
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
domain(cells) domain(bei.extra$elev)
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