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st: RE: appending to a file


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: appending to a file
Date   Mon, 24 Nov 2008 16:49:23 -0000

You shouldn't try. 

First, -reshape- one or the other so that you have two data files with
compatible structure, and then -append-. 

Second, it's not even clear that this is an -append- problem. It sounds
more like -merge- to me. 

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

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of JOHN
ANTONAKIS
Sent: 24 November 2008 16:45
To: statalist@hsphsun2.harvard.edu
Subject: st: appending to a file

I have two files. One in long and one in wide format.

In the long file, I have observations at the group level:

group  x  y
1
1
1
1
2
2
2
2
k


In the wide file, I have data at the group level, including a variable
day:

group day x y
1         1
2         1
3         2
4         2
5         3
k

How can I append the day variable from the wide file to the long file?


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