Re: st: upper case to lower case for all variable names

["Michael Blasnik" <michael.blasnik@verizon.net>]

"Caleb Southworth" <caleb@twinky.uoregon.edu>  wrote:
> Within SIC lags:
> sort SIC
> by SIC: gen CF_1=CF[_n-1]
> by SIC: gen CF_2=CF[_n-2]
> etc.
This approach should not be used to create lagged values because Stata 
randomly breaks ties during a sort.  You must specify the time variable 
using -bysort SIC (time): gen ...- or else use Stata's built-in time series 
operators which are much smarter and more careful.

Michael Blasnik
michael.blasnik@verizon.net

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