scaletointerval {spatstat} | R Documentation |
Rescales a dataset so that the values range exactly between the specified limits.
scaletointerval(x, from=0, to=1) ## Default S3 method: scaletointerval(x, from=0, to=1) ## S3 method for class 'im' scaletointerval(x, from=0, to=1)
x |
Data to be rescaled. |
from,to |
Lower and upper endpoints of the interval
to which the values of |
These functions rescale a dataset x
so that its values range exactly between the limits
from
and to
.
The method for pixel images (objects of class "im"
)
applies this scaling to the pixel values of x
.
Rescaling cannot be performed if the values in x
are not
interpretable as numeric, or if the values in x
are all equal.
An object of the same type as x
.
Adrian Baddeley Adrian.Baddeley@csiro.au http://www.maths.uwa.edu.au/~adrian/ and Rolf Turner r.turner@auckland.ac.nz
X <- as.im(function(x,y) {x+y+3}, unit.square()) summary(X) Y <- scaletointerval(X) summary(Y)