How to one hot encode several categorical variables in R

Question

I\'m working on a prediction problem and I\'m building a decision tree in R, I have several categorical variables and I\'d like to one-hot encode them consistently in my tra

Answer 1

Code

library(data.table)
library(mltools)
customers_1h <- one_hot(as.data.table(customers))

Result

> customers_1h
id gender_female gender_male mood_happy mood_sad outcome
1: 10             0           1          1        0       1
2: 20             1           0          0        1       1
3: 30             1           0          1        0       0
4: 40             0           1          0        1       0
5: 50             1           0          1        0       0

Data

customers <- data.frame(
  id=c(10, 20, 30, 40, 50),
  gender=c('male', 'female', 'female', 'male', 'female'),
  mood=c('happy', 'sad', 'happy', 'sad','happy'),
  outcome=c(1, 1, 0, 0, 0))