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Re: st: FW: forvalues question...


From   Scott Merryman <scott.merryman@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: FW: forvalues question...
Date   Fri, 8 Feb 2013 08:27:27 -0600

On Fri, Feb 8, 2013 at 8:04 AM, Mahometa, Michael J
<michael.mahometa@ssc.utexas.edu> wrote:
> All,
>
> I've got a dataset that has multiple rows for one year, with several sequential variables. And, I'd like to sum what happens over the year (using something like collapse). I have 20 variables and the data looks like:
>
> Year   var1  var2  var3  var4  var5 ....
> 1999   2     5     6     1     4
> 1999   4     1     5     2     5
> 1999   1     3     5     6     7
> 2000   6     5     1     3     8
> 2000   1     1     2     3     6
> ...
>
> So the current "brute force" method is:
> collapse (sum) var1_s=var1 var2_s=var2 ///
> var3_s=var3 var4_s=var4, by(year)
>
> But this seems in-elegant.

How about:

collapse (sum) var*, by(year)
rename var* =_s

Scott
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