Set NA and “” Cells in R Dataframe to NULL

Question

I have a Dataframe in R where certain rows in some of the columns have values that are NA or empty strings \"\". I want to convert these to NULL<

Answer 1

There really is no NULL value in a vector. NA is the placeholder. If you want to remove the entire column (which is what assigning NULL would do) when its values are all NA then this would succeed:

df[ , sapply(df, function(x) all(is.na(x)) ) ] <- NULL

If you want to construct an object where you keep only those rows with no NA values:

df[ apply(df,1, function(rw) !any(is.na(rw)) ) , ]