R help - Sep 2003 - error handling in R/ lapack routines

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

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

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
>>
>>
>