From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Cubizolles <j.cubizolles@free.fr>
Subject: Re: Problems with LaTeX source block
Date: Tue, 16 Jul 2013 17:04:46 +0200
Message-ID: <87y596h7g1.fsf@free.fr>
References: <8761wcjk5y.fsf@free.fr> <87wqos42vm.fsf@med.uni-goettingen.de>
	<87oba3djid.fsf@free.fr> <87zjtmhica.fsf@ucl.ac.uk>
Mime-Version: 1.0
Content-Type: text/plain
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:50114)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1Uz6tE-0002uy-Pn
	for emacs-orgmode@gnu.org; Tue, 16 Jul 2013 11:10:11 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1Uz6tD-0006wq-1c
	for emacs-orgmode@gnu.org; Tue, 16 Jul 2013 11:10:08 -0400
Received: from plane.gmane.org ([80.91.229.3]:50534)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1Uz6tC-0006vs-Qk
	for emacs-orgmode@gnu.org; Tue, 16 Jul 2013 11:10:06 -0400
Received: from list by plane.gmane.org with local (Exim 4.69)
	(envelope-from <geo-emacs-orgmode@m.gmane.org>) id 1Uz6tA-0002tA-16
	for emacs-orgmode@gnu.org; Tue, 16 Jul 2013 17:10:04 +0200
Received: from 37.160.46.132 ([37.160.46.132])
	by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <emacs-orgmode@gnu.org>; Tue, 16 Jul 2013 17:10:04 +0200
Received: from j.cubizolles by 37.160.46.132 with local (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <emacs-orgmode@gnu.org>; Tue, 16 Jul 2013 17:10:04 +0200
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/emacs-orgmode>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
To: emacs-orgmode@gnu.org

Hi Eric,

Eric S Fraga <e.fraga@ucl.ac.uk> writes:


> Interesting.  I have this behaviour as well in terms of background.  I
> use a dark theme on all of my windows, be they emacs or xterms.  The png
> generated by imagemagick sets the background to transparent which means
> I cannot see the images produced as the actual drawing and text are
> black.
>
> I am happy with this: just had to remember to set the drawing colour to
> white by "\begin{tikzpicture}[white]".

The background/foreground are supposed to be changed by setting the
:buffer yes header and by customizing org-format-latex-options. I didn't
try it though, I'm happy with the [white] option to tikzpicture.

However, I noticed something odd. If I use the following headers

--8<---------------cut here---------------start------------->8---
#+header: :results raw :file py2tikz_sin.png
#+header: :imagemagick yes :fit yes :headers '("\\usepackage{tikz,pgfplots}")
#+header: :iminoptions -density 600 :imoutoptions -geometry 400
--8<---------------cut here---------------end--------------->8---

the png is transparent. If I remove the last line:
--8<---------------cut here---------------start------------->8---
#+header: :results raw :file py2tikz_sin.png
#+header: :imagemagick yes :fit yes :headers '("\\usepackage{tikz,pgfplots}")
--8<---------------cut here---------------end--------------->8---
I get the white background back, although in both cases, imagemagick is
used.

Julien.