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Re: st: -nl- question [was: From: ... <email@example.com>]
Please use informative subjects for your posts.
Also note that the Statalist software is lamentably
incapable of transliterating Greek characters.
You refer to an -nl- function -log4- bundled with Stata.
This fits equations of the form
y = b0 + b1 /(1 + exp(-b2*(x - b3)))
I see two variables there, y and x. I guess you want
to fit a more complicated equation with two predictor
variables on the RHS. You could do that with -nl-
but with -log4- only one functional form is on
offer. You would need to use a different syntax.
-nl- in Stata 9 is much more flexible than in
Does anyone know if the command nl log4 can handle more than one variables
and if yes how the estimated parameters can be recovered?
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