Sounds like
... , by(country year)
The keyword is "include".
Nick
[email protected]
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of sarah smith
> Sent: 28 May 2004 17:15
> To: [email protected]
> Subject: RE: st: RE: collapse panel data for each year
>
>
> Hi Nick,
> If I use collapse as below:
>
> collapse x y, by(country)
>
> It is not useful for me since I need to run collapse for the
> data portions
> in each of the 20 years.
> Best,
> Sarah
>
>
>
> >From: "Nick Cox" <[email protected]>
> >Reply-To: [email protected]
> >To: <[email protected]>
> >Subject: st: RE: collapse panel data for each year
> >Date: Fri, 28 May 2004 16:53:46 +0100
> >
> >Once you've -collapse-d the data once, you
> >have a new dataset, so I can't see that
> >you'd want to do this in a loop.
> >
> >At first glance you just need to include
> >the variable for country in the -by()- option.
> >
> >Nick
> >[email protected]
> >
> >sarah smith
> > >
> > > I have panel data for several industries in 40 countries for
> > > 20 years. For
> > > each year, I am trying to collapse the data by country. I
> > > tried to use
> > > foreach and forvalues commands, but could not work it out. I would
> > > appreciate if you can help me.
> >
> >*
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> >* http://www.stata.com/support/statalist/faq
> >* http://www.ats.ucla.edu/stat/stata/
>
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