polynomial: Create Polynomials

In uwIntroStats: Descriptive Statistics, Inference, Regression, and Plotting in an Introductory Statistics Course

Description

Creates polynomial variables.

Usage

  polynomial(x,degree=2,center=mean(x,na.rm=T), version=F)

Arguments

x	variable used to create the polynomials.
degree	the maximum degree polynomial to be returned. Polynomials of degree <= degree will be returned.
center	the value to center the polynomials at.
version	if TRUE, returns the version of the function and nothing else.

Value

A matrix containing the linear splines.

Author(s)

Scott S. Emerson, M.D., Ph.D., Andrew J. Spieker, Brian D. Williamson

Examples

  # Reading in a dataset
  mri <- read.table("http://www.emersonstatistics.com/datasets/mri.txt", header=TRUE)
  attach(mri)
  # Create a polynomial on ldl
  polynomial(ldl, degree=3)

uwIntroStats documentation built on May 2, 2019, 4:34 a.m.