qrnn (version 2.1.1)

dummy.code: Convert a factor to a matrix of dummy codes

Description

Converts a factor (categorical) variable to a matrix of dummy codes using a 1 of C-1 binary coding scheme.

Usage

dummy.code(x)

Value

a matrix with the number of rows equal to the number of cases in x

and the number of columns equal to one minus the number of factors in

x. The last factor serves as the reference group.

Arguments

x

a factor variable.

Examples

Run this code
  print(dummy.code(iris$Species))

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