ob-lilypond and LaTeX floats/captions

ob-lilypond and LaTeX floats/captions

[James Harkins]

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Especially looking for users of ob-lilypond:

I currently have a few LilyPond source code blocks that are working quite well as inline graphics (exported to LaTeX), e.g.:

#+BEGIN_SRC lilypond :exports results :noweb yes :file ex1.eps
...
#+END_SRC

When I export, it (correctly) asks if I want to evaluate the source block, and the export (correctly) includes the line:

\includegraphics[width=.9\linewidth]{ex1.eps}

So far, so good.

Now, I would like to make the results a floating figure, with a caption and a #+name reference. So I added the following to the above block:

#+name: ex1
#+caption: One possible form of "seed" material to start the performance.
#+BEGIN_SRC lilypond :exports results :noweb yes :file ex1.eps
...
#+END_SRC

... but the #+name is not converted into a label, and the #+caption is also ignored.

My question, then, is: What is needed to get ob-lilypond to support LaTeX floats and captions? (I have a sneaky feeling it isn't trivial, but it's worth asking in any case.)

hjh

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Re: ob-lilypond and LaTeX floats/captions

[Nicolas Goaziou]

Hello,

"James Harkins" <jamshark70@qq.com> writes:

> I currently have a few LilyPond source code blocks that are working quite well as inline graphics (exported to LaTeX), e.g.:
>
> #+BEGIN_SRC lilypond :exports results :noweb yes :file ex1.eps
> ...
> #+END_SRC
>
> When I export, it (correctly) asks if I want to evaluate the source block, and the export (correctly) includes the line:
>
> \includegraphics[width=.9\linewidth]{ex1.eps}
>
> So far, so good.
>
> Now, I would like to make the results a floating figure, with a caption and a #+name reference. So I added the following to the above block:
>
> #+name: ex1
> #+caption: One possible form of "seed" material to start the performance.
> #+BEGIN_SRC lilypond :exports results :noweb yes :file ex1.eps
> ...
> #+END_SRC
>
> ... but the #+name is not converted into a label, and the #+caption is also ignored.
>
> My question, then, is: What is needed to get ob-lilypond to support
> LaTeX floats and captions? (I have a sneaky feeling it isn't trivial,
> but it's worth asking in any case.)

You are applying the name and caption to the source block, which is
removed (:exports results), not to the results of the source block. So,
you need to generate the results first, or at least put a RESULTS
keyword below, and apply the name and caption to it.

Regards,

-- 
Nicolas Goaziou

Re: ob-lilypond and LaTeX floats/captions

[James Harkins]

On February 27, 2016 5:57:01 AM Nicolas Goaziou <mail@nicolasgoaziou.fr> wrote:

> > My question, then, is: What is needed to get ob-lilypond to support
> > LaTeX floats and captions? (I have a sneaky feeling it isn't trivial,
> > but it's worth asking in any case.)
>
> You are applying the name and caption to the source block, which is
> removed (:exports results), not to the results of the source block. So,
> you need to generate the results first, or at least put a RESULTS
> keyword below, and apply the name and caption to it.

A-ha. Thank you. So, "What is needed to get ob-lilypond to support LaTeX 
floats and captions" is to RTFM ;)

I have often exported source code to LaTeX listings, but only infrequently 
exported results. So I wasn't clear on the mechanism. Now that you explain 
it, it makes perfect sense: the properties belong to an entity that I asked 
it not to export.

Thanks again - I can take it from here.

(PS This project is a write-up of an improvisational composition -- a lot 
of text description of the procedure, with some examples in musical 
notation along the way. It blows my mind that I can write the lilypond 
scores directly into the org document, and it all renders with C-c C-e l p. 
org-mode FTW! Again!)

hjh

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