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

st: RE: dropping missing variables


From   "Peter Adamson" <Peter.Adamson@egu.leeds.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: dropping missing variables
Date   Wed, 10 Sep 2003 15:28:55 +0100

Hi Ben,

Sure - investigate the mvpatterns command and drop where _mv >0

Peter

-----------------------------------------------------
Peter Adamson 
Leukaemia Research Fund 
Epidemiology and Genetics Unit             
Margaret Smith Building                    .-.
University of Leeds                       /   \
30 Hyde Terrace                       E .   G   . U  
LEEDS LS2 9LN                        _ /         \ _
+44 (0)113 3433578 direct line
+44 (0)113 2459806 fax

http://www.egu.leeds.ac.uk/
-----------------------------------------------------


> -----Original Message-----
> From: Ben.Kriechel@roa.unimaas.nl [mailto:Ben.Kriechel@roa.unimaas.nl]
> Sent: 10 September 2003 15:23
> To: statalist@hsphsun2.harvard.edu
> Subject: st: dropping missing variables
> 
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Is there a way in which I can drop variables that have only missing
> observations? This is something that happens quite often in general
> purpose surveys in which specific sub-groups are analyzed. It is quite
> annoying to keep all those unnecessary variables in memeory, and quite
> tiring to identify and eliminate them all.
> 
> Any suggestions are welcome. 
> 
> groetjes, 
> Ben Kriechel
> 
> -----BEGIN PGP SIGNATURE-----
> Version: PGPfreeware 6.0.2i
> 
> iQA/AwUBP18l6+db8S0dfCWJEQJFSQCg5hCWDD8KhMFh4lDfqkkEY6JgoqgAoL6b
> ObhIa9JqA5+HKJLL/Ln0U3Oc
> =A9Vu
> -----END PGP SIGNATURE-----
> *
> *   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/
> 

*
*   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 1996–2021 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index