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Re: [Orgmode] org-exp-blocks: what about previewing blocks ?

From: Carsten Dominik
Subject: Re: [Orgmode] org-exp-blocks: what about previewing blocks ?
Date: Fri, 28 Aug 2009 10:02:56 +0200

Hi Eric,

this sounds like a great alternative, thanks.

I wonder if we should consider some cashing of images, also
for export.  I think we could have an alist with sha1 hashes as keys
and image files as values.  The sha1 hash could be made from the
entire code and the command that is used to create the image..

- Carsten

On Aug 27, 2009, at 8:51 PM, Eric Schulte wrote:

I don't have any plans to add previewing to org-exp-blocks, however
there is an alternative.

Org-babel provides for the evaluation and viewing of the results of
blocks in Org-mode documents. As such, it is possible to use Org- babel to preview the output of blocks. For example, with Org-babel installed
[1] calling C-c C-c on the following block will evaluate the block
placing a link to the resulting file into the Org-mode document.
Subsequently calling C-c C-o with the point on the block will find the
link and open it previewing the image.

--8<---------------cut here---------------start------------->8---
#+begin_src ditaa :file images/blue.png :cmdline -r
| cBLU    |
|         |
|    +----+
|    |cPNK|
|    |    |
--8<---------------cut here---------------end--------------->8---

Hopefully in the near future Org-babel should be stable enough to
justify an initial release, which should include an instructional page
on worg.

Best -- Eric

[1]  http://eschulte.github.com/org-babel/#getting-started

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prof.dr. Carsten Dominik                                address@hidden
Astronomical Institute 'Anton Pannekoek'                
Faculty of Science, University of Amsterdam             phone   
SCIENCE PARK 904, ROOM C4-106                   fax     +31-20-5257484
1098 XH Amsterdam, The Netherlands
mail: PO BOX 94249, 1090GE, Amsterdam

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