[R] Sweave and printing error

[Vincent Goulet]

Le mar. 25 mars à 17:12, Christophe Genolini a écrit :

> Hi the list.
>
> I am writing a tutorial for my student using LaTeX and sweave. I  
> include
> some example that work (obiously) but I would also like to include  
> some
> example that do NOT work (for pedagogie)...
> Is it possible ?
>
> At this point, I find that :
> - if there is a error in the code, Sweave stop
> - if I put the error in try(), Sweave compile but does not print the
> error as output.
>
> Any solution ?
>
> Thanks a lot
>
> Christophe

Something along these lines should do what you want:

<<echo=TRUE, eval=FALSE>>=
TRUE <- 3
@
<<echo=FALSE, eval=TRUE>>=
cat(try(TRUE <- 3))
@

If I recall correctly, this was discussed here before.

HTH

---
   Vincent Goulet, Associate Professor
   École d'actuariat
   Université Laval, Québec
   Vincent.Goulet at act.ulaval.ca   http://vgoulet.act.ulaval.ca