[R] Avoid Sweave from stopping on errors
Roger.Bivand at nhh.no
Wed Sep 7 20:16:15 CEST 2005
On Wed, 7 Sep 2005, Douglas Bates wrote:
> On 9/7/05, Doran, Harold <HDoran at air.org> wrote:
> > You could use <<eval=FALSE>>= and the code inside the chunk will not
> > be evaluated. I suppose two other options could be to comment out the
> > bad code inside the code chunk or to use verbatim to make it look like
> > a code chunk in your output.
> > -----Original Message-----
> > From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Vincent Goulet
> > Sent: Wednesday, September 07, 2005 11:44 AM
> > To: r-help at stat.math.ethz.ch
> > Subject: [R] Avoid Sweave from stopping on errors
> > Hi all,
> > Is there an option in Sweave to avoid it from stopping on a code chunk
> > with an error? (I purposefully want to include code with an error in
> > class notes.)
> > I suspect the answer is "no" and that I will be pointed to
> > options("error"). That'd be fine, but which error parameter will just
> > "do nothing" in case of an error?
> > Thanks in advance!
> Another option is to wrap the call that will produce an error in
> try(). You still get the error report, etc. but execution does not
This works very nicely for the original purposes, as the try() can be
hidden and the command in error echoed:
y <- rnorm(10)
is.na(y) <- 1
lm(y ~ 1, na.action=na.fail)
try_out <- try(lm(y ~ 1, na.action=na.fail))
looks in output as it should, with the error message set after the command
that provoked it.
Sweave is a remarkable tool.
Economic Geography Section, Department of Economics, Norwegian School of
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e-mail: Roger.Bivand at nhh.no
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