I have a time-series with several products. I want to remove outliers using the Tukey Fence method. The idea is to create a column with a flag indicating outlier or not, using groupby. It should be like that (flag column is added by the groupby): date prod units flag 1 a 100 0 2 a 90 0 3 a 80 0 4 a 15 1 1 b 200 0 2 b 180 0 3 b 190 0 4 b 30000 1 I was able to do it separating the prods using a for-loop and then making corresponding joins, but I wish to do it more cleanly. Continue reading...
