st: suest after nl estimation

[Jan Hohberger <Jan.Hohberger@uts.edu.au>]

Hi 

I am estimating two nonlinear models with the “nl” command and would like to compare the results afterwards with “suest”. However, I get the error message “model_1 was estimated with a non-standard vce (gnr)”. 
The sues-help states that the “estimators should be estimated without vce(robust) or vce(cluster clustvar) options. Since I am doing this I am not sure why I get the error.

nl (dep1 = ( {i}^_i) * ({b}^_b) * exp(-1* 0.27 * ({bi}^_i)*({bs}^_s))
estimates store model_1

nl (dep2 = ({i}^_i) * ({b}^_b) * exp(-1* 0.45 * ({bi}^_i)*({bs}^_s))
estimates store model_2

suest model_1 model_2

Thanks 

Jan Hohberger

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