On 22 Aug 2014, at 12:39, Duncan Murdoch <murdoch.dun...@gmail.com> wrote:
> On 22/08/2014, 6:02 AM, Bart Kastermans wrote: >> I have a daily generated report in which I put a check using stopifnot. >> Unfortunately >> I didn’t check the effect very well, turns out that if the condition checked >> fails >> this is not shown in the knitr output (I only get an error much later due to >> a missing >> object). >> >> So my question is, what is the correct way to use assertions in a >> <filename>.Rnw >> file. I want to perform a check, and if it fails everything should stop >> with a message >> I can generate. >> > > One of the differences between knitr and Sweave is that knitr handles > errors, and Sweave doesn't. I expect there's some knitr option to tell > it to quit in case of error (a hook?), but you'll have to check the > documentation to find it. Thanks; that helped me to find the exact right option: <<filelist, error=FALSE>>= # check all files exist before continuing stopifnot(all(sapply(files, file.exists))) @ > > Duncan Murdoch > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
