prmat(obj, xl, xu, yl, yu, n)
surf.gls
n x n
grid within the rectangle
x
,
y
and
z
suitable for passing to
contour
and
image
.
topo.kr <- surf.gls(2, expcov, topo, d=0.7) prsurf <- prmat(topo.kr, 0, 6.5, 0, 6.5, 50) contour(prsurf, levels=seq(700, 925, 25))