https://github.com/cran/fields
Tip revision: 0e015763c23043fc79b36e20177cde5e8b4eb092 authored by Doug Nychka on 06 July 2010, 19:17:12 UTC
version 6.3
version 6.3
Tip revision: 0e01576
evlpoly.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
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),
PACKAGE = "fields")$results
return(temp)
}