Dear R-users, Can someone help understand why in the following example R would return a negative value for the last parameter when I have constrained it to be positive and greater than or equal to 0.01? > nlminb(start=initial value,objective=some function, > lower=c(-Inf,-Inf,-Inf,0.01),upper=c(Inf,Inf,Inf,Inf)) Many thanks, Dominique Dominique Katshunga ============== Lecturer in Statistical Sciences Department University of Cape Town Tel. 021 6504669 Fax. 021 6504773 email. dominique.katshu...@uct.ac.za
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