Нам нужно загрузить пакет dplyr
#install.packages('dplyr') # if not installed, install it
library(dplyr)
trainData_df %>%
select(name,loan_status) %>%
mutate (Y = ifelse(loan_status=="Charged Off", 1, 0))
Также, ifelse
, не нужно
trainData_df %>%
select(name,loan_status) %>%
mutate(Y = +(loan_status == "Charged Off"))