Use of as.factor in R




While going to some kaggle problem tutorials on the net, I found heavy usage of the function as.factor().
I wanted to know about the exact purpose of the function and how to know when we have to use it and when not and for what kind of variables.



as.factor is used when you want to convert the data type of a variable to a factor/categorical variable. Typically when you want to convert a numeric/integer/character variable into a categorical variable we use as.factor.