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 on April 23, and its replacement, statalist.org is already up and running.


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

RE: st: A new dataset with means by period


From   "Miguel Angel Duran" <maduran@uma.es>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: A new dataset with means by period
Date   Fri, 12 Apr 2013 14:12:18 +0200

Sorry, Geomina, I meant collapse (not compress), but collapse does not work
with by:.

-----Mensaje original-----
De: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] En nombre de Geomina Turlea
Enviado el: viernes, 12 de abril de 2013 14:03
Para: statalist@hsphsun2.harvard.edu
Asunto: Re: st: A new dataset with means by period

Hi Miguel,
you can do the same thing that you tried by using collapse

by date: collapse (mean) var


_________________________________________Geomina Turlea TODO AQUEL QUE SUEÑA
SE CONVIERTE EN ARTISTA


--- On Fri, 4/12/13, Miguel Angel Duran <maduran@uma.es> wrote:

> From: Miguel Angel Duran <maduran@uma.es>
> Subject: st: A new dataset with means by period
> To: statalist@hsphsun2.harvard.edu
> Date: Friday, April 12, 2013, 2:53 PM
> From a panel data set, I want to
> generate a new dataset with the means per period. I have tried to use 
> 'By date: compress (mean) var', but by: does not seem to work with 
> compress. Will you please help me? Is there a way to do this 
> automatically?
> 
> M. Angel.
> 
> -----Mensaje original-----
> De: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu]
> En nombre de Miguel Angel
> Duran
> Enviado el: lunes, 08 de abril de 2013 21:27
> Para: statalist@hsphsun2.harvard.edu
> Asunto: st: Dropping all subjects but those in the last period
> 
> My dataset includes observations for about 9000 companies per year in 
> a twenty years period. To clean the dataset, I would like to drop all 
> those companies that are not present in the last year (because the 
> rest went bankrupt or were absorbed), but I do not know how to do it.
> Can this be done
> just by splitting the datasets by period and then merging them?  Each 
> company has the same id across years. Thanks.
> 
> Miguel A. Duran.
> 
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/
> 
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/faqs/resources/statalist-faq/
> *   http://www.ats.ucla.edu/stat/stata/
> 

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


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


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