DUMMY {easyCODA}

Dummy variable (indicator) coding

Description

Convert categorical variable to dummy (0/1) coding

Usage

DUMMY(x, catnames=NA)

Arguments

x

Variable (vector) of categorical data to be coded

catnames

Category names

Details

The function DUMMY takes a categorical variable and converts it to a set of dummy variables (zeros and ones), where the ones indicate the corresponding category. There are as many columns in the result as there are unique categories in the input vector.

Author(s)

Michael Greenacre

Examples

# Indicator (dummy) coding of sex in FishMorphology data set
data(fish)
sex   <- fish[,1]
sex.Z <- DUMMY(sex, catnames=c("F","M"))