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st: RE: RE: RE: reallocating variables within observations


From   Linn Renée Naper <linn.naper@ecgroup.no>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: RE: reallocating variables within observations
Date   Tue, 18 Nov 2008 13:58:39 +0100

Thanks, I will. 
Right know I'm not sure if I need it, but interesting to look into anyway I think.
It is probably possible to do this in several steps using merge, new files etc, 
but that's not how I want to do it if I can do it with a "simple" command.

Tnx again.


-----Opprinnelig melding-----
Fra: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] På vegne av Nick Cox
Sendt: 18. november 2008 12:22
Til: statalist@hsphsun2.harvard.edu
Emne: st: RE: RE: reallocating variables within observations

Linn's statement is an understatement. This kind of allocation is strong stuff. See -cquantile- and -fixsort- on SSC for what may be  answers to your question, and always keep copies of the data as they are now. 

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss

It is not really clear what you want (in particular: what role does the "y"
play?)

But here is a quick and dirty solution:

************
clear*
input var1 var2
1      2
3 1
4 3
5 1
5 3
4 2
3 4
6 4
6 1
2 1
2 2
end
l, sepby(var1) noo
sort var1
preserve
tempfile new
keep var1
save `new'
restore
drop var1
sort var2
merge using `new'
order var1 var2
l
*************

Linn Renée Naper

I have two variables x1 and x2 identified by the variable y. Then I sort the
data on x1, so that the observation with the lowest value of x1 comes first.

How can I tell stata to allocate the x2 values so that the lowest x2 is
assigned the observation with the lowest x1 etc? This is not the same as
sorting by x1 and x2, as I need to reallocate the variables within
observations.

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