Top Answers

1. How to isolate year from mmddyyyy string with no available delimiter?
   3 votes
2. How to color/shade the area between two lines in ggplot2?
   3 votes
3. How to change the name of an observation according to its occurrence
   2 votes
4. Arrange columns by prefix in column names
   2 votes
5. Concatenate a vector of strings/character
   2 votes