padimage(X, value=NA, n=1, W=NULL)
"im"
).
X
.
n
.
"im"
, of the same type as X
.
X
will be expanded by a margin of n
pixels, or extended to fill the window W
,
with new pixel values set to value
. The argument value
should be a single value (a vector of length
1), normally a value of the same type as the pixel values of X
.
It may be NA
. Alternatively if X
is a
factor-valued image, value
can be one of the levels of
X
.
If n
is given, it may be a single number, specifying the
width of the border in pixels. Alternatively it may be a vector
of length 2 or 4. It will be replicated to length 4, and these numbers
will be interpreted as the border widths for the
(left, right, top, bottom) margins respectively.
Alternatively if W
is given, the image will be extended to
the window W
.
im
Z <- setcov(owin())
plot(padimage(Z, 1, 10))
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