From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Loris Bennett" <loris.bennett@fu-berlin.de>
Subject: Re: Avoiding recompilation of ditaa ASCII if unmodified between
 exports
Date: Fri, 24 Apr 2015 07:48:45 +0200
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To: emacs-orgmode@gnu.org

Hi,

Rob Stewart <robstewart57@gmail.com> writes:

> Hi,
>
> I really appreciate the integration with ditaa and org mode.
> http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-ditaa.html
>
> I have an Org mode document with 5 ditaa diagrams, and exporting my
> Org file is taking quite a long time, about 10 seconds to compile 5
> ditaa diagrams + HTML export.
>
> At the moment, even if I don't modify any of the ditaa ASCII, all 5
> are compiled from ASCII to a PNG. Is there a way ask ditaa to only
> generate a new PNG file if the contents of the `#+BEGIN_SRC ditaa`
> have changed?
>
> Thanks,
>
> --
> Rob

I think you want to look at caching:

http://orgmode.org/manual/cache.html

Cheers,

Loris

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