# rescale.owin

0th

Percentile

##### Convert Window to Another Unit of Length

Converts a window to another unit of length.

Keywords
spatial, math
##### Usage
# S3 method for owin
rescale(X, s, unitname)
##### Arguments
X

Window (object of class "owin").

s

Conversion factor: the new units are s times the old units.

unitname

Optional. New name for the unit of length. See unitname.

##### Details

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.

##### Value

Another window object (of class "owin") representing the same window, but expressed in the new units.

##### Note

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.

unitname, rescale, rescale.owin, affine, rotate, shift

• rescale.owin
##### Examples
# NOT RUN {
data(swedishpines)
W <- Window(swedishpines)
W
# coordinates are in decimetres (0.1 metre)
# convert to metres:
rescale(W, 10)
# or equivalently
rescale(W)
# }

Documentation reproduced from package spatstat, version 1.57-1, License: GPL (>= 2)

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