evalPol {MonoPoly}

Evaluating Polynomials

Description

Function to evaluate polynomials in a numerical robust way using the Horner scheme

Usage

evalPol(x, beta)

Arguments

x

numerical values at which to evaluate polynomials, can be provided in a vector, matrix, array or data frame

beta

numerical vector containing the coefficient of the polynomial

Value

The result of evaluating the polynomial at the values in x, returned in the same dimension as x has.

Author(s)

Berwin A Turlach <[e-mail]>

Examples

beta <- c(1,2,1)

x <- 0:10
evalPol(x, beta)
str(evalPol(x, beta))

x <- cbind(0:10, 10:0)
evalPol(x, beta)
str(evalPol(x, beta))


x <- data.frame(x=0:10, y=10:0)
evalPol(x, beta)
str(evalPol(x, beta))