Hi!
I want to convert S-Plus 6.2 code to R 2.1.0. Instead of the function nlminb I
use the function optmin
optmin(start,fn,gr,method="L-BFGS-B", lower, upper, hess,...)
But then I get the Error in optmin ...: L-BFGS-B needs finite values of fn
Then I used optmin(start,fn,gr,method="BFGS", hess, ...)
But then I get the Error in optmin ...: initial value in vmmin is not finite
I know the final parameter estimates from S-Plus which I use as starting values
in R.
The upper and lower bounds are close around the final estimates.
So there is not much to maximize.
What can I do?
Thank you for help,
Peter
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