GDAtools (version 2.1)

dichotom: Dichotomizes the variables in a data frame

Description

Dichotomizes the variables in a data frame exclusively composed of categorical variables, i.e. transforms the data into an indicator matrix (also known as disjunctive table)

Usage

dichotom(data, out = "numeric")

Value

Returns a data frame with dichotomized variables. The number of columns is equal to the total number of categories in the input data.

Arguments

data

data frame of categorical variables

out

character string defining the format for dichotomized variables in the output data frame. Format may be "numeric" (default) or "factor".

Author

Nicolas Robette, Julien Barnier

Examples

## Dichotomizes Music example data frame
data(Music)
dic <- dichotom(Music[,1:5])
str(dic)

## with output variables in factor format
dic <- dichotom(Music[,1:5], out='factor')
str(dic)