Re: Add caption to babel-generated images

[Florian Lindner <mailinglists@xgm.de>]

Am 30.08.2016 um 13:04 schrieb Georgiy Tugai:
> I don't know if it'll work for Python, but here's an example of what
> works for me with Ditaa:
> 
>> #+BEGIN_SRC ditaa :file figs/-mininet-ovsk.png :cache yes
>>    /----+ /----+ /----+ /----+
>>    |host| |host| |host| |host|       Containers
>>    +-+--/ +-+--/ +--+-/ +--+-/
>>      |      |       |      |
>>   ---------------------------------------------
>>      |      |       |      |
>>    +-+------+-------+------+-+
>>    |      Open VSwitch       |      Host kernel
>>    +-----+-------------+---=-+
>>          |             |
>>   +------+-----+ +-----+------+
>>   | controller | | controller |  Host userspace
>>   +------------+ +------------+
>> #+END_SRC
>>
>> #+ATTR_LATEX: :width "" :options [scale=0.75]
>> #+CAPTION: [[label:fig:mininet-arch]]Mininet with OpenVSwitch architecture
>> #+RESULTS[1d367d39f18523f4eb247cb13aabd6c6f633fbdf]: [[file:figs/-mininet-ovsk.png]]
> 
> First, execute your Babel block in order to generate a #+RESULTS line.
> Then, add CAPTION, ATTR_LATEX etc. lines before the RESULTS line.

This seems to work mostly, yes. Problem is, that org puts the label inside the caption:

\begin{figure}[htb]
\centering
\includegraphics[width=.9\linewidth]{rbf-gaussian-4.pdf}
\caption{\label{fig:GaussianExample}Gaussian Basis functions with vertex distances marked at $n \cdot \frac{1}{6}$.}
\end{figure}

This way the label does not work, i.e. won't be found by ref links.

#+BEGIN_SRC python :exports results :results file
  import matplotlib.pyplot as plt, numpy as np
  x = np.linspace(-2, 2, 1000)
  plt.plot(x, np.exp(-np.power(4*x, 2)), label="shape-parameter=4")
  for i in range(-4, 5): plt.axvline(1/6 * i, ymax = 0.1, ls = "-.", color="r")
  plt.grid()
  plt.savefig('rbf-gaussian-4.pdf')
  return "rbf-gaussian-4.pdf"
#+END_SRC

#+LABEL: fig:GaussianExample
#+CAPTION: Gaussian Basis functions with vertex distances marked at $n \cdot \frac{1}{6}$.
#+RESULTS:
[[file:rbf-gaussian-4.pdf]]


Using NAME instead of caption results in the same latex output.

Thanks,
Florian

> 
> Good luck!
> Georgiy
> 
> On 30 Aug, Florian Lindner wrote:
>> Hello,
>>
>> I have this code block:
>>
>> #+BEGIN_SRC python :exports results :results file
>>   import matplotlib.pyplot as plt, numpy as np
>>   x = np.linspace(-2, 2, 1000)
>>   plt.plot(x, np.exp(-np.power(4*x, 2)), label="shape-parameter=4")
>>   for i in range(-4, 5): plt.axvline(1/6 * i, ymax = 0.1, ls = "-.", color="r")
>>   plt.grid()
>>   plt.savefig('rbf-gaussian-4.pdf')
>>   return "rbf-gaussian-4.pdf"
>> #+END_SRC
>>
>> When exporting to latex it nicely compiles into \includegraphics[width=.9\linewidth]{rbf-gaussian-4.pdf}.
>>
>> Now I want to have this \includegraphics in a figure environement including a label (to reference it) and a caption.
>>
>> How can do this best?
>>
>> I have found:
>> http://emacs.stackexchange.com/questions/12150/add-caption-to-an-image-generated-by-a-code-block
>>
>> but it doesn't work for me.
>>
>> Thanks,
>> Florian
>>
>>