I have a data set DATA with column REF_AREA, TIME_PERIOD, ROW_ID, X I want to sum by REF_AREA and TIME_PERIOD When I do this
DATA %>%
group_by(REF_AREA,TIME_PERIOD) %>%
summarise(X_ = sum(X))
I got his as a result, so not by REF_AREA TIME_PERIOD
X_
1 72147423
I looked on the stackoverflow and tried many ways found here, but not the result expected yet.