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From: Johannes Rainer <johannes.rainer@i-med.ac.at>
To: Charles Berry <ccberry@ucsd.edu>
Cc: emacs-orgmode@gnu.org
Subject: Re: macro expansion in source code
Date: Thu, 29 Aug 2013 21:22:59 +0200	[thread overview]
Message-ID: <CABxYo6rukOVuSY8LO7+VktCJDPtbPn7gRuxMqfcQQiQg2_7tmg@mail.gmail.com> (raw)
In-Reply-To: <loom.20130829T170757-251@post.gmane.org>

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thanks for that solution! I will give it a try!


On Thu, Aug 29, 2013 at 5:15 PM, Charles Berry <ccberry@ucsd.edu> wrote:

> Johannes Rainer <johannes.rainer <at> gmail.com> writes:
>
> >
> >
> > hi,
> > I was just wondering if there is a way to use macro expansion also in
> > source code blocks or headers. I tried this, but the macro was never
> > expanded, but rather the {{{image_width}}} was exported. could the
> > expansion be done by calling the macro expansion before export
> > (e.g. using a hook)?
> >
> > something like this:
>
> [snip]
>
> I think the answer is no. But you can accomplish much the same thing with
> properties and/or noweb references. Like this
>
> * header
>   :PROPERTIES:
>   :image_width: 16
>   :END:
>
> #+NAME: imwide
> #+HEADER: :var iw=(org-entry-get (point) "image_width")
> #+BEGIN_SRC R :results value
> iw
> #+END_SRC
>
> #+RESULTS: imwide
> : 16
>
>
> #+BEGIN_SRC R :noweb yes :results output
> image.width <-
>   <<imwide()>>
> image.width
> #+END_SRC
>
> #+RESULTS:
> : [1] 16
>
>
>
>
>


-- 
Johannes Rainer, PhD
Applied Bioinformatics Group,
Division Molecular Pathophysiology,
Biocenter, Medical University Innsbruck,
Innrain 80/82 II, 6020 Innsbruck, Austria
and
Tyrolean Cancer Research Institute
Innrain 66, 6020 Innsbruck, Austria

Tel.:     +43 (0)512 9003 70961
Email:  johannes.rainer@i-med.ac.at
            johannes.rainer@tcri.at
URL:   http://bioinfo.i-med.ac.at

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     prev parent reply	other threads:[~2013-08-29 19:23 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-29 11:52 macro expansion in source code Johannes Rainer
2013-08-29 15:15 ` Charles Berry
2013-08-29 19:22   ` Johannes Rainer [this message]

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