Re: org-export-sweave

[Carsten Dominik <dominik@uva.nl>]

Hi Austin,

since you want to include tis code literally into LaTeX,  the best is  
probably to encapsulate it into

#+BEGIN_LATEX .... #+END_LATEX


and to try to solve only the local editing issue.

Take a look at the function org-edit-src-find-region-and-lang.  There  
is a list of regular expressions that can be used to identify regions  
that should be edited in special modes - maybe I can make this list  
extensible - first, give it a try and see if you can get it working by  
editing the list.

- Carsten

On Sep 1, 2008, at 3:19 PM, Austin Frank wrote:

> Hello!
>
> Sweave is a preprocessing step that can be applied to LaTeX files that
> contain code written in the S or R programming languages.  Sweave  
> allows
> authors to embed their statistical analyses in body of their LaTeX
> articles, enabling what I find to be a very nice style of literate
> programming.  It seems to me like org currently has all of the
> functionality needed to be a top-notch Sweave authoring environment,  
> but
> I can't get the pieces to work correctly together.  So this is both a
> feature request and a request for implementation advice.
>
> I'm hoping that it will be possible to add an option for exporting
> Sweave blocks from org mode.  A Sweave block in LaTeX looks like
>
>  % NB:  options are comma separated, spaces are optional
>  \begin{Scode}{opt1=foo, opt2=bar,opt3=baz}
>  a <- 3
>  a
>  \end{Scode}
>
> Right now I can easily get this exported using
>
>  #+LATEX: \begin{Scode}{opt1=foo, opt2=bar,opt3=baz}
>  a <- 3
>  a
>  #+LATEX: \end{Scode}
>
> But I would also like to be able to use the native editing mode for
> writing the code, as happens in #+BEGIN_SRC blocks. I can't currently
> get a combination of #+BEGIN_SRC and #+LATEX blocks to work.
>
> Would it be possible to have something like
>
>  #+BEGIN_SWEAVE: language opt1=foo, opt2=bar, opt3=baz
>  a <- 3
>  a
>  #+END_SWEAVE
>
> where the code inside the SWEAVE block is edited in the appropriate
> major mode for the language argument?  An actual use, then, would look
> like
>
>  #+BEGIN_SWEAVE:  r fig=TRUE, echo=FALSE,keep.source=TRUE
>  x <- runif(100, 0, 100)
>  y <- runif(100, 0, 100)
>  plot(x ~ y)
>  #+END_SWEAVE
>
> C-c ' inside the block would call out to r-mode from the package ESS.
> LaTeX export would result in
>
>  \begin{Scode}{fig=TRUE, echo=FALSE,keep.source=TRUE}
>  x <- runif(100, 0, 100)
>  y <- runif(100, 0, 100)
>  plot(x ~ y)
>  \end{Scode}
>
> The file output by export to LaTeX should have the extension .Rtex.   
> The
> author can then run Sweave on the file to generate a .tex file, and  
> then
> the normal LaTeX compilation process continues.
>
> I've started trying to put this together myself, but haven't gotten  
> very
> far.  Some of the existing behavior for exporting source code relies  
> on
> prefixing the code inside the block with a ':' at the beginning of the
> line, which then results in a verbatim environment in LaTeX.  I can't
> figure out how to override this selectively for Sweave blocks, while
> retaining the major-mode switching with C-c '.
>
>
> Thanks for any implementations tips or (even better!) working
> implementations ;)
>
> /au
>
> -- 
> Austin Frank
> http://aufrank.net
> GPG Public Key (D7398C2F): http://aufrank.net/personal.asc
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