eatGADS (version 1.1.1)

fac2dummies_complex: Transform a complex factor variable to dummy variables.

Description

Convert a factor variable with complex factor levels (factor levels contain combinations of other factor levels) to dummy variables. Dummy variables are coded 1 ("yes") and 0 ("no").

Usage

fac2dummies_complex(GADSdat, var)

Value

Returns a GADSdat containing the newly computed variables.

Arguments

GADSdat

A data.frame or GADSdat object.

var

A character vector with the name of the factor variable.

Details

The basic functionality of this function is analogous to fac2dummies. However, the function expects factor levels to only go to 9. Higher numbers are treated as combinations of factor levels, for example "13" as "1" and "3".

Examples

## create an example GADSdat
df_fac <- data.frame(id = 1:6, fac = c("Opt a", "Opt c, Opt b", "Opt c",
"Opt b", "Opt a, Opt b", "Opt a, Opt b, Opt c"), stringsAsFactors = TRUE)
g_fac <- import_DF(df_fac)
g_fac <- recodeGADS(g_fac, varName = "fac", oldValues = c(1, 2, 3, 4, 5, 6),
                     newValues = c(1, 12, 123, 2, 3, 23))

## transform factor variable
fac2dummies_complex(g_fac, "fac")