[R] on abort error, always show call stack?

[ivo welch]

yes, thank you.  is it possible to have it invoked to STDERR
automatically on a program abort?

/iaw

On Sun, Aug 22, 2010 at 11:50 AM, Matt Shotwell <shotwelm at musc.edu> wrote:
> On Sun, 2010-08-22 at 11:41 -0400, ivo welch wrote:
>> Dear R Wizards---is it possible to get R to show its current call
>> stack (sys.calls()) upon an error abort?  I don't use ESS for
>> execution, and it is often not obvious how to locate how I triggered
>> an error in an R internal function.  Seeing the call stack would make
>> this easier.  (right now, I sprinkle "cat" statements everywhere, just
>> to locate the line where the error appears.)  Of course, I would
>> really love to see the line in my program that triggered this, but I
>> have asked this before, and I understand this is too difficult to get
>> into the R language.
>
> The traceback() function will print out the call stack after an error.
> However, you may find the debug() family of functions more useful for
> debugging. Also see the browser() function.
>
> -Matt
>
>>
>> regards,
>>
>> /iaw
>>
>> ----
>> Ivo Welch (ivo.welch at brown.edu, ivo.welch at gmail.com)
>>
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>
> --
> Matthew S. Shotwell
> Graduate Student
> Division of Biostatistics and Epidemiology
> Medical University of South Carolina
>
>