Top Answers

1. Group dataframe by ID and then split it into multiple dataframes for each group
   3 votes
2. How to use arrange within a for?
   3 votes
3. ifelse applied to multiple rows defined by date range
   2 votes
4. Prevent rbind from creating empty rows when handling numeric(0)
   2 votes
5. R Compare duplicate values ​for each row in two data sets
   2 votes