Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: string panelvar problem with xtset


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
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

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

http://www.maartenbuis.nl
--------------------------

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index