Top Questions

1. Mutate a variable for many rows in a group based on one row R
   2 votes

   1 answers
2. Using regular expressions in R to detect one or two repeated characters within a class of characters
   2 votes

   2 answers
3. Paste together columns but ignore NAs
   2 votes

   4 answers
4. Rolling index for semi-unique values in two columns R
   2 votes

   2 answers
5. Calculate a relative measure comparing three preceding and three following rows in R
   1 votes

   1 answers