`panel` and `data.table` doesn't allow printing of data - `Error: 'idx' is not found in calling scope`

[andrewbaxter439]

All works behind the scenes, but the panel setup of the data.table doesn't print to show contents:

library(fixest)

data(base_did)
base_dt <- data.table::as.data.table(base_did)

# Setting a data set as a panel...
pdat = panel(base_dt, ~id+period)

pdat
#> Error in `[.data.table`:
#> ! 'idx' is not found in calling scope and it is not a column name either. When the first argument inside DT[...] is a single symbol (e.g. DT[var]), data.table looks for var in calling scope.

[lrberge]

Thanks for reporting.

Hmm this one hurts. I think it's due to a change upstream in data.table. Short run (unsatisfying) solution is to avoid the panel function, sorry.