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Re: st: string panelvar problem with xtset

From   Maarten buis <>
Subject   Re: st: string panelvar problem with xtset
Date   Fri, 8 Apr 2011 17:30:25 +0100 (BST)

--- On Fri, 8/4/11, Dimitriy V. Masterov wrote:
> I am having trouble xtsetting my data. My panel variable
> is a concatenated 12 digit string block-group ID and a 4 digit
> store id.
> There are about 200,000 unique values.
> I cannot encode this variable because it has too many
> values. Sencode might be an option, but it has been chugging
> for some time.
> Any suggestions about how to solve this? 

sort string_id
by string_id : gen first = _n == 1
gen num_id = sum(first)
drop first

Hope this helps,

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen

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