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Re: st: xtpoisson -- error
From
Richard Williams <[email protected]>
To
[email protected], [email protected]
Subject
Re: st: xtpoisson -- error
Date
Mon, 14 Nov 2011 18:10:19 -0500
At 06:01 PM 11/14/2011, Ivan Png wrote:
Dear STATAlist:
I'm running xtpoisson and keep encountering an error message
"factor variables and time-series operators not allowed in option xvars()"
My code:
. global explvar bkval_ln mktval_ln revt_ln at_ln
. global fixedeff i.sic i.year
. set matsize 1000
. xtset gvkey year
. xi: xtpoisson move cnc_alt $explvar $fixedeff , fe i(gvkey) vce(robust)
I'm using STATA-11. It runs through about 12 iterations then stops,
giving me the error message,
""factor variables and time-series operators not allowed in option xvars()".
I would appreciate your help.
Why are you using xi:? Stata 11 supports factor variables. I would
drop the xi. I would also run -update all- to make sure Stata was up to date.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME: (574)289-5227
EMAIL: [email protected]
WWW: http://www.nd.edu/~rwilliam
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