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Re: [Orgmode] org-mode can not precess some LATEX environment

From: Carsten Dominik
Subject: Re: [Orgmode] org-mode can not precess some LATEX environment
Date: Tue, 11 Aug 2009 18:42:27 +0200

On Aug 11, 2009, at 4:50 PM, waterloo wrote:

The manual says math environment need not be in \[ \].

No, this is not what the manual says.

When I put mouse point on `begin' , I can get preview image through C-c C-x C-l.


When I put mouse point on `matrix' , I get two identical matrix with a square between them.

Not anymore after you update

When I put mouse point on `1&d' , I get a square and \[ at above \] at below .

Not anymore, I think.

But yes, this is in fact ambiguous since org parses out from point to see if it is inside a latex fragment. So you need to put point to the right place in this case. Or, to be on the safe side, do the whole subtree with `C-u C-c C-x C-l'.

- Carsten


2009/8/11 Carsten Dominik <address@hidden>

On Aug 11, 2009, at 3:41 PM, Nick Dokos wrote:

waterloo <address@hidden> wrote:

Excuse me .
I put the following latex code in an org file , and put point in it ,C-c
C-x  C-l.  It don't produce the correct image. There is only an square
appearing . The latex environment is include in amsmath package, which is
include in Org Format Latex Header defautly.


I cannot be sure whether "waterloo" sees the same problem (from his
description, it seems that he gets just an empty square which indicates
additional/different problems - maybe missing the dvipng program?),

Yes, this seems to be a different problem. Maybe the problem is thatthe matrix environment must be inside a math environment?

I do see a problem.  Here is the org file:

| #+LaTeX_HEADER: \usepackage{amsmath}

This is actually not necessary, I was mistaken here.

| * foo
| \[
| \begin{matrix}
| 1&d\\
| d&d\\
| \end{matrix}
| \]

I can export this to LaTeX just fine (and I need the additional header, at least in that case - I have not tried without it). But when I try the
preview C-c C-x C-l on the fragment, I get the preview of the matrix
twice with an empty square separating the two instances. I attach a PNG image of the result. I checked the image that is produced in the ltxpng
subdirectory: it's just the image of the matrix, no problem there.

Hmm, another fun and interesting bug!

Fixed now.  Thanks.

- Carsten

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