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st: RE: Conditional stack


From   PEREZ PEREZ JORGE EDUARDO <perez.jorge@ur.edu.co>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Conditional stack
Date   Thu, 30 Jul 2009 19:27:09 +0000

gen vnew=.
replace vnew=v2x if v1=="x"
replace vnew=v2y if v1=="y"

I don't know if there's a single command that does this, though.
_________________________
Jorge Eduardo Pérez Pérez

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of HSIUTZU CHANG
Sent: jueves, 30 de julio de 2009 01:50 p.m.
To: statalist@hsphsun2.harvard.edu
Subject: st: Conditional stack

Dear Statalist users,

I want to generate a new variable
Vnew= V2, but using V2x or V2y will depend on the value of V1

Vnew =V2x if V1=x
Vnew =V2y if V1=y

ID      V1      V2x     V2y     Vnew
1       x       6       12      6
2       x       7       13      7
3       x       8       14      8
4       y       9       15      15
5       y       10      16      16
6       y       11      17      17

What is the command I should use if I want the result of Vnew look
like the above table?
Thanks

Betty
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