My understanding is that optim(method="L-BFGS-B") does box constraints 
and constrOptim linear constraints.  You want box.

On 17/06/09 17:51, Stu @ AGS wrote:
> Hi,
> [...]
>
>
>                  My goal is to feed these into constrOptim such that there is
> no constraint on theta[1] and that theta[2] and theta[3] are both
> constrained to fall between 0.0 and 1.0.
>
>
>
>                  Perhaps my values for ui and ci are incorrect for these
> constraints.
>
>    

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