[R] Locating an error

[Duncan Murdoch]

Worik R wrote:
> Related:  I found the problem eventually.  It was a parameter that was too
> large and the function called "stop".
>
> Looking at the documentation I see I can supply my own error handler.  Cool.
>
> Are there already written error handlers that dump a stack trace?
>   

See http://www.stats.uwo.ca/faculty/murdoch/software/debuggingR/, 
particularly the section on post-mortem debugging.  One of the choices 
described there is to set options(error=recover).

Duncan Murdoch
> cheers
> Worik
>
> On Thu, Mar 18, 2010 at 2:58 PM, Worik R <worikr at gmail.com> wrote:
>
>   
>> I have a large programme that after running half an hour or so fails with
>> an error
>>
>> Error in x[value] <- NA : only 0's may be mixed with negative subscripts
>>
>> How can I find out where that error occurs?
>>
>> If I have to do a binary search using error messages it will take a long
>> time!  Is there some way I can generate a stack trace?
>>
>> cheers
>> Worik
>>
>>     
>
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