Yasmine Kent wrote:
> I have a panel data set of companies, with my time
> variable "date" over many quarters, and my id variable
> "co". I would like to categorise my data according to
> size (my size variable is "TA"), into quintiles, BY
> QUARTER. I want to get a single new variable, call it
> quintile, that takes on values from 1-5 depending on
> which quintile of size the company falls into in that
> particular quarter. [...]
[...]
Assuming your -quarter- variable takes on as many values as there are
quarters in your dataset, then
. bysort quarter (ta): g quintile=group(5)
should do it.
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