CODEWITHSUNDEEP
r
Aro
Aro

Reputation: 13

How to count the number of entries per row in a data frame in R?

I have a number of large data frames for which I need to know the number of elements in each row. For example, if my dataframe df looks like

X Y Z A B
Q R S

I would want the following output vector: 

5
3

How can I code for this in R?

Upvotes: 1

Views: 693

Answers (1)

akrun
akrun

Reputation: 886938

We can use rowSums on the non-missing elements (assuming the columns that doesn't have values are NA)

rowSums(!is.na(df))

If the values are blank "" instead of NA, then create the logical matrix with == and use rowSums

rowSums(df != "")

Upvotes: 1

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