I have data as follows:
df <- as.data.frame(c(1,2,NA,4,5)) names(df) <- "first_column" first_column 1 1 2 2 3 NA 4 4 5 5
I would like to get all the row numbers for which
I found ways to look up other values, i.e.
NA values is apparently quite cumbersome (link).
Is there an easier way to do this?
We could use