Convert Factor to Dummy Indicator Variables for Every Level in R (Example) | model.matrix Function

Описание: How to convert factor levels into dummies in a data frame in the R programming language. More details: https://statisticsglobe.com/convert-f...
R code of this video:

data ＜- data.frame(x1 = c("a", "b", "a", "XXX", "C", "b", "abc"), # Create example data
x2 = 1,
x3 = 2)

model.matrix( ~ x1 - 1, data) # Convert to dummies

data_dummy ＜- data.frame(data[ , ! colnames(data) %in% "x1"], # Create dummy data
model.matrix( ~ x1 - 1, data))