Very large svg file output from latex block using =#+header: :imagemagick=

Very large svg file output from latex block using =#+header: :imagemagick=

[John Hendy]

I'm trying to following along with the example here:
- http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-LaTeX.html#sec-4-3

I don't need dual export, so I tried this instead for straight html
compatible output:

#+header: :file tree.svg
#+header: :imagemagick
#+begin_src latex
  \usetikzlibrary{trees}
  \begin{tikzpicture}
    \node [circle, draw, fill=red!20] at (0,0) {1}
    child { node [circle, draw, fill=blue!30] {2}
      child { node [circle, draw, fill=green!30] {3} }
      child { node [circle, draw, fill=yellow!30] {4} }};
  \end{tikzpicture}
#+end_src

Should this work? I get this error:

org-babel-execute:latex: Can not create svg files, please specify a
.png or .pdf file or try the :imagemagick header argument

In perusing another thread, it looks like the argument might be
=:imagemagic yes=?
- http://lists.gnu.org/archive/html/emacs-orgmode/2011-02/msg01302.html

When I do that and run the above, I get a 30.9mb file as the .svg
output. Surely I'm doing something incorrectly?

Just pulled this morning before executing:

Org-mode version 8.2.1 (release_8.2.1-163-ge7397d @
/home/jwhendy/.elisp/org.git/lisp/)


Thanks for any suggestions!
John

Re: Very large svg file output from latex block using =#+header: :imagemagick=

[Vladimir Lomov]

Hello,
** John Hendy [2013-11-02 16:31:02 -0500]:

> I'm trying to following along with the example here:
> - http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-LaTeX.html#sec-4-3

> I don't need dual export, so I tried this instead for straight html
> compatible output:

> #+header: :file tree.svg
> #+header: :imagemagick
> #+begin_src latex
>   \usetikzlibrary{trees}
>   \begin{tikzpicture}
>     \node [circle, draw, fill=red!20] at (0,0) {1}
>     child { node [circle, draw, fill=blue!30] {2}
>       child { node [circle, draw, fill=green!30] {3} }
>       child { node [circle, draw, fill=yellow!30] {4} }};
>   \end{tikzpicture}
> #+end_src

> Should this work? I get this error:

> org-babel-execute:latex: Can not create svg files, please specify a
> .png or .pdf file or try the :imagemagick header argument

> In perusing another thread, it looks like the argument might be
> =:imagemagic yes=?
> - http://lists.gnu.org/archive/html/emacs-orgmode/2011-02/msg01302.html

> When I do that and run the above, I get a 30.9mb file as the .svg
> output. Surely I'm doing something incorrectly?

I don't know details how latex fragments are translated into SVG but
there is good tool for this: dvisvgm. It is provided by TeX Live though
it works only on DVI files.

> Just pulled this morning before executing:

> Org-mode version 8.2.1 (release_8.2.1-163-ge7397d @
> /home/jwhendy/.elisp/org.git/lisp/)

> Thanks for any suggestions!
> John

---
WBR, Vladimir Lomov

-- 
Some performers on television appear to be horrible people, but when
you finally get to know them in person, they turn out to be even worse.
		-- Avery

Re: Very large svg file output from latex block using =#+header: :imagemagick=

[Andreas Leha]

Hi John,

John Hendy <jw.hendy@gmail.com> writes:

> I'm trying to following along with the example here:
> - http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-LaTeX.html#sec-4-3
>
> I don't need dual export, so I tried this instead for straight html
> compatible output:
>
> #+header: :file tree.svg
> #+header: :imagemagick
> #+begin_src latex
>   \usetikzlibrary{trees}
>   \begin{tikzpicture}
>     \node [circle, draw, fill=red!20] at (0,0) {1}
>     child { node [circle, draw, fill=blue!30] {2}
>       child { node [circle, draw, fill=green!30] {3} }
>       child { node [circle, draw, fill=yellow!30] {4} }};
>   \end{tikzpicture}
> #+end_src
>
> Should this work? I get this error:
>
> org-babel-execute:latex: Can not create svg files, please specify a
> .png or .pdf file or try the :imagemagick header argument
>
> In perusing another thread, it looks like the argument might be
> =:imagemagic yes=?
> - http://lists.gnu.org/archive/html/emacs-orgmode/2011-02/msg01302.html
>
> When I do that and run the above, I get a 30.9mb file as the .svg
> output. Surely I'm doing something incorrectly?

Well, the error message is misleading.

If you go via imagemagick, I guess, the image is rendered and converted
to pixel graphics and then converted back to svg with embedded pixel
graphics, which will inflate the output.

The way to go is to customize org-babel-latex-htlatex to "htlatex".

Then, the block without the :imagemagick header argument should produce
a decent svg.

For reference, this works for me (having org-babel-latex-htlatex set to
"htlatex")

--8<---------------cut here---------------start------------->8---
#+header: :file tree.svg
#+header: :results file raw
#+begin_src latex
  \usetikzlibrary{trees}
  \begin{tikzpicture}
    \node [circle, draw, fill=red!20] at (0,0) {1}
    child { node [circle, draw, fill=blue!30] {2}
      child { node [circle, draw, fill=green!30] {3} }
      child { node [circle, draw, fill=yellow!30] {4} }};
  \end{tikzpicture}
#+end_src

#+results:
[[file:tree.svg]]
--8<---------------cut here---------------end--------------->8---


Regards,
Andreas



>
> Just pulled this morning before executing:
>
> Org-mode version 8.2.1 (release_8.2.1-163-ge7397d @
> /home/jwhendy/.elisp/org.git/lisp/)
>
>
> Thanks for any suggestions!
> John