Wicelo questions

• How to split data in 2 different columns in a qplot() jitter chart?
• Why this facet_grid doesn't delete columns?
• How to get apply functions to have side effects?
• How to get the closest element in a vector for every element in another vector without duplicates?
• Why this command in ggplot is returning an error?
• How to multiply float with integers in C?
• else if(){} VS ifelse()
• How to merge 2 vectors alternating indexes?

Wicelo answers