Re: [R] Sweave, R and complex latex projects

From: Friedrich Leisch <>
Date: Mon 16 Oct 2006 - 09:27:13 GMT

>>>>> On Sat, 14 Oct 2006 23:00:27 +0100, >>>>> Mark Wardle (MW) wrote:

> Hello all,
> I've been able to use R very successfully to run simple statistics and
> generate the plots I require.

> I've been evaluating Sweave, and have hit upon a small problem that I
> don't seem to be able to workaround. Sweave runs very well for single
> file latex documents, but I have a complex thesis made up of several
> parts and chapters. These are arranged with a master latex file and
> subdirectories with "\include"-ed latex fragments representing those
> parts/chapters, and I don't seem to be able to get Sweave to work properly.

> I've tried a number of approaches, including converting the master
> document into a Snw file itself, or even generating chapters manually
> chapter by chapter using Sweave and then "\include"ing the result into
> the master tex file. Unfortunately for the latter attempt, the the latex
> generated doesn't prepend the required path to the filename, and so
> latex looks for the pdfs and tex files in the wrong place - it looks in
> the "root" directory (where the master tex file is located) rather than
> the chapter subdirectory where all the files have been generated.

> I hope I'm not missing something obviously documented, but I can't see
> it in the Sweave docs. Is there an option to prepend a pathname to the
> filename of Sweave generated TeX and PDF documents?

Yes, simply set prefix.string to a path, not only a filename. E.g.,


will place all figures in subdir "figs" (you have to create the directory first manually) and call the separate files "myfile-XXX" where XXX is number or name of the chunk.

> Do people use Sweave for complex multi-file latex projects, and what is
> the best approach? I'm almost tempted to keep R and Latex separate, and
> continue to run a R script to generate all of the dynamic tables/charts
> which are then "\input"ed, but I was rather attracted to the whole
> Sweave approach.

I personally mostly use Makefiles as suggested by Deepayan.

In addition there is \SweaveInput{} which works similar to Latex's own \input{} command. There currently is no equivalent of \include{}.


Prof. Dr. Friedrich Leisch 

Institut für Statistik                          Tel: (+49 89) 2180 3165
Ludwig-Maximilians-Universität                  Fax: (+49 89) 2180 5308
Ludwigstraße 33
D-80539 München       

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