Hello,
I want to solve a nonlinear 3SLS problem with "nlsystemfit()". The
equations
are of the form
y_it = f_i(x,t,theta)
The functions f_i(.) have to be formulated as R-functions. When invoking
"nlsystemfit()" I get the error
Error in deriv.formula(eqns[[i]], names(parmnames)) :
Function 'f1' is not in the derivatives table
Isn't it possible to provide equations in the form
eq1 ~ f1(x,t,theta) etc. to "nlsystemfit()" ?
Kind regards,
Kilian Plank
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