as.rectangle
Window Frame
Extract the window frame of a window or other spatial dataset
Usage
as.rectangle(w, …)Arguments
- w
A window, or a dataset that has a window. Either a window (object of class
"owin"), a pixel image (object of class"im") or other data determining such a window.- …
Optional. Auxiliary data to help determine the window. If
wdoes not belong to a recognised class, the argumentswand…are passed toas.owinto determine the window.
Details
This function is the quickest way to determine a bounding rectangle for a spatial dataset.
If w is a window, the function
just extracts the outer bounding rectangle
of w as given by its elements xrange,yrange.
The function can also be applied to any spatial dataset that has a window:
for example, a point pattern (object of class "ppp") or
a line segment pattern (object of class "psp").
The bounding rectangle of the window of the dataset is extracted.
Use the function boundingbox to compute the smallest
bounding rectangle of a dataset.
Value
A window (object of class "owin")
of type "rectangle" representing a rectangle.
See Also
Examples
# NOT RUN {
w <- owin(c(0,10),c(0,10), poly=list(x=c(1,2,3,2,1), y=c(2,3,4,6,7)))
r <- as.rectangle(w)
# returns a 10 x 10 rectangle
data(lansing)
as.rectangle(lansing)
data(copper)
as.rectangle(copper$SouthLines)
# }