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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