From vincent.goulet at act.ulaval.ca  Fri May  2 21:23:47 2008
From: vincent.goulet at act.ulaval.ca (Vincent Goulet)
Date: Fri, 2 May 2008 15:23:47 -0400
Subject: [Rd] Out of bounds negative index
Message-ID: <DFD3645F-329A-4280-A256-4708B0D54503@act.ulaval.ca>

Hi,

 From the R Language Definition, Section 3.4.1:

"If i is positive and exceeds length(x) then the corresponding  
selection is NA. A negative out of bounds value for i causes an error."

(This is also mentioned in S Programming, footnote of page 24.)

Can someone please provide an example triggering the error? Looking in  
src/main/subscript.c I could not find exception handling for |i| >  
length(x), unless the negative subscript is mixed with NAs. In other  
cases, out of bounds negative indexes just seem silently ignored.

Did I missed or misinterpreted something, here?

Thanks in advance

---
   Vincent Goulet, Associate Professor
   ?cole d'actuariat
   Universit? Laval, Qu?bec
   Vincent.Goulet at act.ulaval.ca   http://vgoulet.act.ulaval.ca



[Rd] Out of bounds negative index
Vincent Goulet