Optional. Origin about which the rotations should be performed.
Either a numeric vector or a character string as described
in the help for shift.owin.
Xname
Optional name for X to be used in the
function labels.
result
Character string specifying the kind of result required.
Value
An object of class "fv" or "im".
Details
This command computes, for each possible distance $r$,
the average pixel value of the pixels lying at
distance $r$ from the origin. Kernel smoothing is used
to obtain a smooth function of $r$.
If result="fv" (the default) the result is a function
object of class "fv" giving the mean pixel value of X
as a function of distance from the origin.
If result="im" the result is a pixel image, with the same
dimensions as X, giving the mean value of X
over all pixels lying at the same distance from the origin
as the current pixel.