Re: org-preview-latex-fragment, pstricks

[Nick Dokos <ndokos@gmail.com>]

Christian Straßer <christian.strasser@ugent.be> writes:

> Dear all,
>
> I have a problem producing correct preview images when using pstricks.
> Here's a minimal example to illustrate the problem.
> I have an org-file "test.org" with the following content:
>
> \begin{equation}
> \varphi
> \end{equation}
> \begin{pspicture}
> \psframebox{text in box}
> test outside box
> \rnode{a}{a} \rnode{b}{b}
> \ncline{a}{b}
> \end{pspicture}
>

I had to get rid of the \rnode and \ncline calls - apparently I don't
have the packages where they are defined.

But once I did that, the preview succeeded and I get a box around
"text in box".

Org-mode version 8.3beta (release_8.3beta-177-gfe133a @
/home/nick/elisp/org-mode/lisp/)

> Executing "org-preview-latex-fragment" is successful for both
> environments (the equation and the pspicture). So no error message is
> produced and no orgtex*.log files are in /tmp. The problem is though
> that for the pspicture environment the psframebox is not produced.
> "Test in a box" appears without a box.
>
> In order to see whether the same problem appears for tex-files and
> preview-latex I created a corresponding tex-file:
>
> \documentclass{article}
> \usepackage{pstricks}
> \begin{document}
> \begin{pspicture}
> \psframebox{text in box}
> test outside box
> \end{pspicture}
> \end{document}
>
> Here everything is displayed as expected/desired.
>

Are there orgtex*.tex files in /tmp? If so, try processing one of those
from the command line and see what you get. If not, the trick I use is
to introduce a deliberate error (call undefined macro \foo) in the tex
code and then try the preview. That leaves a .tex file behind, which I
can edit to get rid of the error and then process by hand. It might be
interesting to compare that with what you have above.

> Similar problems can be produced e.g. when drawing lines with the
> \ncline command and using other pstricks-commands.
>
> Here's the relevant settings from my .emacs:
> (custom-set-variables
> '(org-latex-create-formula-image-program (quote dvipng))
>  '(org-latex-default-packages-alist (quote (("AUTO" "inputenc" t)
> ("T1" "fontenc" t) ("" "fixltx2e" nil) ("" "graphicx" t) (""
> "longtable" nil) ("" "float" nil) ("" "wrapfig" nil) ("" "rotating"
> nil) ("normalem" "ulem" t) ("" "amsmath" t) ("" "textcomp" t) (""
> "marvosym" t) ("" "wasysym" t) ("" "amssymb" t) ("" "hyperref" nil)
> "\\tolerance=1000" ("" "pstricks" t) ))))
>

I don't know whether this causes your problems (probably not),
but as the doc for the variable says, it's not a good idea to change
org-latex-default-packages-alist unless there is a conflict. You should
add the pstricks entry to org-latex-packages-alist instead and leave
org-latex-default-packages-alist alone.

> I also tried to set the org-latex-create-formula-image-program to
> imagemagick: the problem remains the same.
> I also tried to remove the pstricks-entry from
> org-latex-default-packages-alist and manually add it via
> #+LATEX_HEADER
> which did not change the result.
>
> Finally, here's my org-mode version: 8.2.7b.
>
> Any help is highly appreciated.
>

--
Nick