Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: collapse


From   "Riano, Alejandro" <ALEJANDROR@iadb.org>
To   statalist@hsphsun2.harvard.edu
Subject   st: collapse
Date   Tue, 10 Sep 2002 17:48:49 -0400

I'm collapsing the standard deviation for a set of variables (monthly
frequency):

collapse (sd) er rer, by(country_name year)

but if for example one country doesn't have data for all the year, i'm
getting a 0 instead of a missing value after doing the collapse, do you know
how can i solve this ?

Alejandro Riano
==========================
Research Department
Inter-American Development Bank
(202) 623-1932
alejandror@iadb.org
==========================

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   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   |   What's new   |   Site index