Top Questions

1. How to calculate percentile with group by?
   5 votes

   5 answers
2. How to make R take values from another column in case of missing values?
   2 votes

   3 answers
3. How to give back true or false based on multiple criteria in R?
   2 votes

   2 answers
4. How to combine two data.tables based on multiple criteria in R?
   2 votes

   3 answers
5. How to summarise values in a column with non-exact match in R?
   1 votes

   6 answers