[R] question about optim

[Roger D. Peng]

You might want to try using options(error = recover) or perhaps 
options(error = browser).

-roger

Mikyoung Jun wrote:
> Hello,
> 
> When we use optim and run into errors, such as generates NA/NaN/Inf, and 
> the routine stops because of this error, is there a way to print the 
> values of the argument of the functions where the error occurs? 
> For example, I am doing minimizing negative log likelihood and when the 
> optim stops because of those errors, I'd like to know what was the 
> parameter values at that time. I heard nlm has something called 
> "print.level" and I am wondering there is a way for optim as well. Thank 
> you.
> 
> Mikyoung Jun
> 
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