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st: RE: Differencing problem
From
"Impavido, Gregorio" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: RE: Differencing problem
Date
Wed, 26 Jun 2013 20:39:39 +0000
It happens to me when I have a numerical variable mistakenly formatted as string. Likely a remote possibility in your case but just in case.....
Gregorio
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Michael Betz
Sent: Wednesday, June 26, 2013 4:20 PM
To: [email protected]
Subject: st: Differencing problem
Hi,
I am trying to use the "d." operator to get differenced observations but am having some trouble. When I try to calculate differenced observations using
gen newvar=d.(var)
Stata returns each observation as missing. My data has observations for each variable in each of two time periods and variation exists over the two time periods. I've used the "d." before without problems so I'm not sure what I'm missing here. Any help is appreciated.
Mike
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