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From | Nick Cox <njcoxstata@gmail.com> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: RE: Error message with GMM command |
Date | Mon, 6 Jun 2011 13:42:26 +0100 |
Nick On 6 Jun 2011, at 13:27, lreine ycenna <lreine.ycenna@gmail.com> wrote:
No observations. r(2000);using 'xtabond2 y L.y a b c axb axc, gmm (y b c) iv (a) two robust small':S On 6 June 2011 13:08, lreine ycenna <lreine.ycenna@gmail.com> wrote:I've just done the update.I dont understand why 3 other error messages appear after the GMM command:xtabond2 y a b c axb axc, gmm (y b c, eq(diff)) iv (a, eq(level)) two robust small estimates post: matrix has missing values stata(): 3598 Stata returned error xtabond2_mata(): - function returned error <istmt>: - function returned error r(3598); xtabond2 y a b c axb axc, gmm (y b c, eq(diff)) iv (a, eq(level)) two robust small It syas that matrix has missing values?I'm using longitude panel data, so I wonder if there's anything on theformat of my data I need to set up first that I
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