https://github.com/cran/fields
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Tip revision: 6c8b30169bba182a68765ee3cb9b4e2ef7d38332 authored by Doug Nychka on 16 November 2011, 00:00:00 UTC
version 6.6.3
Tip revision: 6c8b301
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)
}
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