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Computes the farthest distance from each pixel, or each data point, to the boundary of the window.
fardist(X, ...) # S3 method for owin
fardist(X, ..., squared=FALSE)
# S3 method for ppp
fardist(X, ..., squared=FALSE)
For fardist.owin, a pixel image (object of class "im").
For fardist.ppp, a numeric vector.
A spatial object such as a window or point pattern.
Arguments passed to as.mask to determine
the pixel resolution, if required.
Logical. If TRUE, the squared distances will be
returned.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
Rolf Turner rolfturner@posteo.net
and Ege Rubak rubak@math.aau.dk
The function fardist is generic, with methods for
the classes owin and ppp.
For a window W, the command fardist(W)
returns a pixel image in which the value at each pixel
is the largest distance from that pixel to the boundary of
W.
For a point pattern X, with window W, the
command fardist(X) returns a numeric vector
with one entry for each point of X, giving the
largest distance from that data point to the boundary of W.
fardist(cells)
plot(FR <- fardist(letterR))
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