How to write in R to indicate if the treatment indicator 1/0 and non-zero?-CodePudding

the treatment indicator will a variable that equals 1 if the number of videos included in an article (num_videos) is non-zero, and which equals 0 otherwise. How do you write this in R? Is it the function ifelse in R?

CodePudding user response：

 a <- ifelse(sum(x) == 0, 0, 1)

CodePudding user response：

You can also use case_when() if you have more than two options like having a catch for NA values (I flagged them with a 2).

treatment <- c(0, 1, 2, 3, 4, NA, 2)
case_when(treatment == 0 ~ 0, treatment != 0  ~ 1, is.na(treatment) ~ 2)