Re: [R] Sweave and printing error

From: Vincent Goulet <>
Date: Wed, 26 Mar 2008 01:59:21 -0400

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.


   Vincent Goulet, Associate Professor
   École d'actuariat
   Université Laval, Québec

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