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st: RE: levpet
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: RE: levpet
Date
Fri, 30 Jul 2010 19:13:08 +0200
<>
Have you fully -update-d official Stata and -levpet- (user-written,
obtained via -findit-). This example works well for me:
***********
clear*
set obs 100
gen byte companyid=_n
expand 10
bys companyid: gen int time =_n+1988
tsset companyid time
gen logsales=log(runiform()*10)
gen logpowerfuel=log(runiform()*10)
gen loglabor=log(runiform()*10)
gen logmaterial=log(runiform()*10)
gen logcapital=log(runiform()*10)
gen revenue=log(runiform()*10)
levpet logsales, free(logpowerfuel loglabor) /*
*/ proxy(logmaterial) capital(logcapital) revenue
***********
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Sudeshna Pal
Sent: Freitag, 30. Juli 2010 18:39
To: [email protected]
Subject: st: levpet
I am working with STATA 10 and trying to use the levpet command in the
following way:
tsset companyid year
panel variable: companyid (strongly balanced)
time variable: year, 1989 to 2008
delta: 1 unit
levpet logsales, free(logpowerfuel loglabor) proxy(logmaterial)
capital(logcapital) revenue
and I get the following error:
error #1 occurred in program nllp_bs_gmm
error . . . . . . . . . . . . . . . . . . . . . . . . Return code 196
nl___________ refused query, rc= ___________;
error # _________ occurred in program nl_________;
Your nlfunc program did not work properly with the nl command
Any suggestion as to how to solve this?
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