"im"
to represent a two-dimensional pixel image.image.default(xcol, yrow, t(im))
dim
dimensions of matrix v
xrange
range of $x$ coordinates of image window
yrange
range of $y$ coordinates of image window
xstep
width of one pixel
ystep
height of one pixel
xcol
vector of $x$ coordinates of centres of pixels
yrow
vector of $y$ coordinates of centres of pixelsim
,
Kmeasure
,
setcov