Convert Window to Another Unit of Length
Converts a window to another unit of length.
## S3 method for class 'owin' rescale(X, s, unitname)
X |
Window (object of class |
s |
Conversion factor: the new units are |
unitname |
Optional. New name for the unit of length.
See |
This is a method for the generic function rescale.
The spatial coordinates in the window X
(and its window) will be re-expressed
in terms of a new unit of length that is s times the current
unit of length given in X.
(Thus, the coordinate values are divided by s,
while the unit value is multiplied by s).
The result is a window representing the same region of space, but re-expressed in a different unit.
If s is missing, then the coordinates will be re-expressed
in ‘native’ units; for example if the current unit is
equal to 0.1 metres, then the coordinates will be re-expressed in metres.
Another window object (of class "owin") representing the same
window, but expressed in the new units.
The result of this operation is equivalent to the original window.
If you want to actually change the coordinates by
a linear transformation, producing a window that is larger or smaller
than the original one, use affine.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
and Rolf Turner r.turner@auckland.ac.nz
data(swedishpines) W <- Window(swedishpines) W # coordinates are in decimetres (0.1 metre) # convert to metres: rescale(W, 10) # or equivalently rescale(W)
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