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

Re: st: Re: RE: expand an agrregated file


From   Ernest Berkhout <ernestb@seo.fee.uva.nl>
To   statalist@hsphsun2.harvard.edu, <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Re: RE: expand an agrregated file
Date   Thu, 28 Aug 2003 10:16:26 +0200

At 23:59 27-8-2003, Scott Merryman wrote:
> ann fitzmaurice
>
> > i have a file in the following format
> >
> > region lgd pop_lgd pop_region
> > 1 1 20 65
> > 1 2 45 65
> > 2 1 10 25
> > 2 2 15 25
> > There are other variables and populations with the
> > variables but this is
> > just a small example
> >
> > i would like to create a data set that is case based so
> > instead of 4 lines
> > in the above example will have 90 lines - i have looked at
> > expand but am
> > not sure if this is the command to use
>
> Yes, it is.
>
> Nick
> n.j.cox@durham.ac.uk
>

Ann,

I take it when you say you want 90 observations, you want to expand each region
+ lgd by its population?

If so, one way would be to:

forvalue i = 1/4 {
local num = pop_lgd[`i']
expand `num' in `i'
}
Just for curiosity: Scott, what is the exact difference between your approach with the loop and a simple "expand pop_lgd" without a loop?



Ernest Berkhout
SEO Amsterdam Economics
University of Amsterdam

Room 3.08
Roetersstraat 29
1018 WB Amsterdam
The Netherlands

tel.:+ 31 20 525 1657
fax:+ 31 20 525 1686
http://www.seo.nl
===========================
A statistician: someone who insists
on being certain about uncertainty
===========================

*
* 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