dummy: Table of dummy variables

In mlesnoff/rchemo: Dimension reduction, Regression and Discrimination for Chemometrics

Table of dummy variables

Description

The function builds a table of dummy variables from a qualitative variable. A binary (i.e. 0/1) variable is created for each level of the qualitative variable.

Usage

dummy(y)

Arguments

y	A qualitative variable.

Value

A matrix of dummy variables (i.e. binary variables), each representing a given level of the qualitative variable.

Examples

y <- c(1, 1, 3, 2, 3)
dummy(y)

y <- c("B", "a", "B")
dummy(y)
dummy(as.factor(y))

mlesnoff/rchemo documentation built on April 15, 2023, 1:25 p.m.