https://github.com/cran/fields
Tip revision: 04279c16ce718b82025aae97f6fcd30ba3a8b1c5 authored by Doug Nychka on 05 September 2011, 20:18:33 UTC
version 6.6
version 6.6
Tip revision: 04279c1
evlpoly.R
# fields, Tools for spatial data
# Copyright 2004-2011, Institute for Mathematics Applied Geosciences
# University Corporation for Atmospheric Research
# Licensed under the GPL -- www.gpl.org/licenses/gpl.html
fields.evlpoly <- function(x, coef) {
# evaluates polynomial at x values with coefficients coef[i] and powers i-1
#
n <- length(x)
J <- length(coef)
results <- rep(0, n)
temp <- .Fortran("evlpoly", x = as.double(x), n = as.integer(n),
coef = as.double(coef), j = as.integer(J), results = as.double(results)
)$results
return(temp)
}