Evaluate Kriging Standard Error of Prediction over a Grid
DESCRIPTION:
Evaluate Kriging standard error of prediction over a grid.
USAGE:
semat(obj, xl, xu, yl, yu, n, se)
REQUIRED ARGUMENTS:
obj
object returned by
surf.gls
xl
limits of the rectangle for grid
xu
yl
yu
n
use
n x n grid within the rectangle
OPTIONAL ARGUMENTS:
se
standard error at distance zero as a multiple of the supplied
covariance. Otherwise estimated, and it assumed that a correlation
function was supplied.
VALUE:
list with components x, y and z suitable for passing to
contour
and
image.