Tps.r
# fields, Tools for spatial data
# Copyright 2004-2007, Institute for Mathematics Applied Geosciences
# University Corporation for Atmospheric Research
# Licensed under the GPL -- www.gpl.org/licenses/gpl.html
"Tps" <-
function (x, Y, m = NULL, p = NULL, scale.type = "range",
...)
{
x <- as.matrix(x)
d <- ncol(x)
if (is.null(p)) {
if (is.null(m)) {
m <- max(c(2, ceiling(d/2 + 0.1)))
}
p <- (2 * m - d)
if (p <= 0) {
stop(" m is too small you must have 2*m -d >0")
}
}
Tpscall <- match.call()
Tpscall$cov.function <- "Thin plate spline radial basis functions (Rad.cov) "
Krig(x, Y, cov.function = Rad.cov, m = m,
scale.type = scale.type, outputcall = Tpscall, p = p, GCV=TRUE,
...)
}