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st: RE: NL SUR


From   "Xia Shang" <xia.shang@ndsu.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: NL SUR
Date   Mon, 22 Nov 2010 10:28:44 -0600

Hello, Andres 
Drop Lnp6 in your Nlsur, and try again

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of A.Silva
Sent: Monday, November 22, 2010 9:33 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: NL SUR

Dear all, 
I am trying to estimate a NL SUR (AIDS). I have 6 expenditure groups (so, I
use 5 equations).
However, I get the following error:

nlsur aids @ w1 w2 w3 w4 w5 lnp1 lnp2 lnp3 lnp4 lnp5 lnp6 lnpx, parameters
(a1 a2 a3 
> a4 a5 b1 b2 b3 b4 b5 g11 g12 g13 g14 g15 g22 g23 g24 g25 g33 g34 g35 g44
g45 g55) neq
> (5) ifgnls
(obs = 93)

Calculating NLS estimates...
could not evaluate equation 1
starting values invalid or some RHS variables have missing values
r(480);

end of do-file

r(480);

. sum w1 w2 w3 w4 w5

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
          w1 |        93    .1100006     .009555   .0885841   .1273791
          w2 |        93    .0358503    .0024138   .0261827   .0412181
          w3 |        93    .3097675    .0091194   .2870499   .3364181
          w4 |        93    .1936698    .0147691   .1689364   .2275145
          w5 |        93     .085791    .0040142   .0737699   .0976536



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