| predict.trls {spatial} | R Documentation |
Predicted values based on trend surface model object
## S3 method for class 'trls' predict(object, x, y, ...)
object |
Fitted trend surface model object returned by |
x |
Vector of prediction location eastings (x coordinates) |
y |
Vector of prediction location northings (y coordinates) |
... |
further arguments passed to or from other methods. |
predict.trls produces a vector of predictions corresponding
to the prediction locations. To display the output with image
or contour, use trmat or convert the returned vector
to matrix form.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
data(topo, package="MASS")
topo2 <- surf.ls(2, topo)
topo4 <- surf.ls(4, topo)
x <- c(1.78, 2.21)
y <- c(6.15, 6.15)
z2 <- predict(topo2, x, y)
z4 <- predict(topo4, x, y)
cat("2nd order predictions:", z2, "\n4th order predictions:", z4, "\n")