doUniqueCJ {panelaggregation} | R Documentation |
This function makes use of CJ
function of the data.table package to perform a
cross join. The function makes sure that the combinations are unique and removes NAs before
joining. doUniqueCJ is rather not used as a standalone function but inside computeShares
.
doUniqueCJ(dt, cols)
dt |
data.table |
cols |
character vector that denotes names of relevant columns |
Matthias Bannert, Gabriel Bucur