[R] error handling in R/ lapack routines

[Spencer Graves]

yes:  From "?optim", I get the following:

optim(par, fn, gr = NULL,
            method = c("Nelder-Mead", "BFGS", "CG", "L-BFGS-B", "SANN"),
            lower = -Inf, upper = Inf,
            control = list(), hessian = FALSE, ...)

By "fn", I meant the function you supply for that argument.

spencer graves

Hae-Kyung Im wrote:
> Hi,
> Thanks for your reply.
> 
> I did search in google but I couldn't really find a list of error codes. 
> Although you're right, that wouldn't probably help me much.
> 
> What do you mean by using "fn" as a stand-alone function? Do you mean the 
> function I'm maximizing?
> 
> Haky
> 
> 
> 
> On Thu, 4 Sep 2003, Spencer Graves wrote:
> 
> 
>>	  I just did a Google search for "lapack error codes" and got several 
>>hits.  However, I don't know if a translation of "error code 17" would 
>>really help you.
>>
>>	  Have you tried "fn" as a stand-alone function?  If yes, have you 
>>tried including a "cat" or "print" statement in it, so it prints the 
>>value (and maybe the arguments) before it actually returns it?  If optim 
>>is going to run more than a few seconds, I have "fn" print the value it 
>>returns.  If it returns NA. I see that, etc.
>>
>>hope this helps.
>>spencer graves
>>
>>Hae-Kyung Im wrote:
>>
>>>Does any of you know where I can find an explanation of lapack errors codes?
>>>I get error code 17 when using optim().
>>>
>>>Is there a way to handle errors in R such that depending on the type of 
>>>error I can decide what to do next?
>>>
>>>Thanks,
>>>Haky
>>>
>>>______________________________________________
>>>R-help at stat.math.ethz.ch mailing list
>>>https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>>
>>
>