Re: [O] How to export LaTeX amsmath align bmatrix to ODT?

[edgar]

On 2017-06-10 05:13, address@hidden wrote:
> On 2017-06-10 04:54, address@hidden wrote:
> > Hello,
> >
> > I have been making progress with my export procedure to ODT. I would
> > like to know if someone knows how to export the following LaTeX block
> > to ODT correctly:
> >
> > \[\begin{align} \begin{bmatrix} a = 1 & b=2 \\ c=3 & d = 4
> > \end{bmatrix} \end{align}\]
> > https://www.vfemail.net/roundcube/?_task=mail&_action=compose&_id=289067995593b7fd683a1f#
> > \[\begin{align}  a = & 1 + 2 + 3 + 4 \\ c = &  4 \end{bmatrix} 
> > \end{align}\]
> >
> > As always, any help is welcome :) .
> >
> >
> > Edgar
>
> By the way, I tried with latexmlmath and mathtoweb.jar without success.

Ok. I got it (with a minor glitch). If someone can help me to get the 
right colors on the screen (my screen is black; the \tensor symbol is 
also black), I would appreciate it. Now I can export to ODT with my 
custom symbols and the bmatrix environment.

For the record, I had modified org-preview-latex-process-alist to get 
custom symbols, and this got in the way of the LaTeX bmatrix environment 
(I don't know how; I was loading a file with with :latex-header as 
"\\input{preamble.tex}").

My partial answer (it is partial, because the \tensor preview renders in 
a different color than the rest of symbols): Instead of modifying 
org-preview-latex-process-alist, the answer I modified 
org-format-tex-header. I added the following at the end of M-x 
customize-variable org-format-tex-header (I leave it here for posterity; 
I added some symbols: tensor, derivative, vector, Roman numeral, etc.)

\usepackage{stackengine}
\stackMath
% Does not work
% \newcommand\tenq[2]{%
% \def\useanchorwidth{T}%
%  \ifnum#1>1%
%    
\stackunder[0pt]{\tenq[\numexpr#1-1\relax]{#2}}{\scriptscriptstyle\sim}%
%  \else%
%    \stackunder[1pt]{#2}{\scriptscriptstyle\sim}%
%  \fi%
%}

% Change del operator to d
% 
http://tex.stackexchange.com/questions/178946/better-automatic-spacing-of-differential-d
\renewcommand{\d}[1]{\mathop{\mathrm{d}{#1}}\!{}}
\newcommand{\del}[1]{\d{\left(#1\right)}}
\newcommand{\diff}[2]{
  \frac{\d{}}{\d{#2}}
  \left(#1\right)}
\newcommand{\deriv}[2]{
  \frac{\del{#1}}{\d{#2}}}

% https://tex.stackexchange.com/a/229547
\renewcommand{\vec}[1]{
  \hbox{\oalign{$#1$\crcr\hidewidth$\scriptscriptstyle\sim$\hidewidth}}}
% --- Define \dvec and \ddvec for dotted and double-dotted vectors.
\newcommand{\dvec}[1]{\dot{\vec{#1}}}
\newcommand{\ddvec}[1]{\ddot{\vec{#1}}}

% 
https://tex.stackexchange.com/questions/229543/double-tilde-symbol-under-letter
\newcommand{\dtens}[1]{
  
\stackunder[0pt]{\stackunder[1pt]{#1}{\scriptscriptstyle\sim}}{\scriptscriptstyle\sim}}

\newcommand{\ftens}[1]{
  
\stackunder[0pt]{\stackunder[0pt]{\stackunder[0pt]{\stackunder[1pt]{#1}{\scriptscriptstyle\sim}}{\scriptscriptstyle\sim}}{\scriptscriptstyle\sim}}{\scriptscriptstyle\sim}
}

% Define \tensor and \mtensor (matrix)
\newcommand{\tensor}[1]{\dtens{#1}}
\newcommand{\tens}[1]{\ftens{#1}}

\newcommand{\mtensor}[1]{%
  \left[{\tensor{#1}}\right]}
% --- Define \dtens and \ddtens for dotted and double-dotted tensors.
\newcommand{\dtens}[1]{\dot{\tensor{#1}}}
\newcommand{\ddtens}[1]{\ddot{\tensor{#1}}}
% --- Define \dmtens and \ddmtens for dotted and double-dotted tensors.
\newcommand{\dmtens}[1]{\dot{\mtensor{#1}}}
\newcommand{\ddmtens}[1]{\ddot{\mtensor{#1}}}

% Trace
\newcommand{\Tr}[1]{\mathop{\mathrm{tr}}\!{}\left(#1\right)}

% Have a thicker line for the mean value
%\newcommand*{\mean}[1]{\overbracket[0.65pt][-1pt]{#1}}
% amssymb, amsmath
% adapt: 
http://tex.stackexchange.com/questions/22100/the-bar-and-overline-commands
\newcommand{\mean}[1]{\mkern 
3mu\overbracket[0.65pt][-1pt]{\mkern-3mu#1\mkern-3mu}\mkern 3mu}

% Roman number III
\def\III{I\hspace{-2pt}I\hspace{-2pt}I}

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