poly2form: Expands Design Matrix Based on Polynomials
In HoRM: Supplemental Functions and Datasets for "Handbook of Regression Methods"

Description Usage Arguments Value References See Also Examples

This function takes a list of objects having class polynomial, evaluates each polynomial as a function of x, then returns the results in a matrix.

1	poly2form(poly.out, x)

`poly.out`	A list whose objects are of class `polynomial`.
`x`	A vector of values for which each polynomial in `poly.out` is to be evaluated.

poly.out returns a matrix whose columns are the evaluation of each polynomial in poly.out using x.

Young, D. S. (2017), Handbook of Regression Methods, CRC Press.

legendre.polynomials

 
## Evaluating the order 5 Legendre polynomials.

require(orthopolynom)

px <- legendre.polynomials(n = 5, normalized = FALSE)
lx <- poly2form(poly.out = px, x = 1:10)

lx