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| From | Nick Cox <n.j.cox@durham.ac.uk> |
| To | "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu> |
| Subject | RE: st: documentation on iteration for a non linear regression |
| Date | Wed, 13 Jun 2012 15:50:53 +0100 |
It all depends on what command you are using. You don't say what command you used previously (another piece of advice being ignored), but after -nl- (for example) common steps would be
mat b = e(b)
di b[1,1]
di b[1,2]
scalar b1 = b[1,1]
scalar b2 = b[1,2]
Nick
n.j.cox@durham.ac.uk
tashi lama
Sorry, I read and reread the manual. I am confused. The manual says _b[varname] and _se[varname] to access the coeff and standard error of a var and _b[_cons] and _se[_cons] to access the coeff and standard error of a constant. I am fitting a exponential model y=b1*b2^x to my dataset and got e(b) as
mat li e(b)
e(b)[1,2]
b1: b2:
_cons _cons
y1 632.7252 .33046311
di _b[_cons] gave me the coeffiecient i.e. 632.73. In the same spirit, I would assume I do di _b[x] to get the coeff of x. There is an error which reads [x] not found. Any idea?
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