polyval: Evaluate a polynomial

In signal: Signal Processing

Description

Evaluate a polynomial at given points.

Usage

polyval(coef, z)

Arguments

coef	coefficients of the polynomial, defined in decreasing power.
z	the points at which to evaluate the polynomial.

Value

An array of length(z), the polynomial evaluated at each element of z.

Author(s)

Tom Short

See Also

poly, roots

Examples

polyval(c(1, 0, -2), 1:3)  # s^2 - 2 

Example output

Attaching package: 'signal'

The following objects are masked from 'package:stats':

    filter, poly

[1] -1  2  7

signal documentation built on May 25, 2021, 3 p.m.