-nl- changed in Stata 9 and the FAQ reflects that change.
So, you will need to get the equivalent Stata 8 code from
somewhere.
The Statalist FAQ advises signalling if you are using
an out-of-date Stata; otherwise you may get advice you
cannot follow up. For example, my comment about Mata
in this thread does not apply to you until you upgrade.
Nick
[email protected]
Quang Nguyen
> Thanks to Rodrigo I found a very nice discussion on how Stata can be
> used to solve a nonlinear equation system, I replicated the example
> using Stata version 8. Howver, there was a nerror message when I run
> the following command:
>
> nl faq @ y, parameters(A B C) initial(A 1 B 1 C 1)
>
> I look at help for nl in stata, and change the command to:
>
> nl faq y, parameters(A B C) initial(A 1 B 1 C 1)
>
> There is a message: "option at() required, nlfaq refused
> query, rc=198"
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