Paweł Chabros questions

Paweł Chabros answers

• R; For each level in column A, replace values in column B, following condition in column C
• How to select rows with certain values on a combination of two variables within a group in R
• Creating a new column which is a vector of other columns
• picture as a background of shiny dashboard
• Draw a line between two points from different groups while simultaneously dogging the points
• Summing values in R based on column value with dplyr
• ggplot change size of some legend items