Software Open Access
group_dt. First, it is faster than before because I use
.SDis slow) Second, I design an alternative to use
group_dt, which might improve the efficiency further.
fill_na_dtto fill NAs in data.table. Debug all missing functions. Examples are refreshed.
complete_dtto complete a data.frame like
dummy_dtto get dummy variables from columns.
t_dtto transpose data frame efficiently.
in_dtto create a short cut to data.table facilities.