From mboxrd@z Thu Jan 1 00:00:00 1970 From: Samuel Sinayoko Subject: Re: equation numbering in html and latex export Date: Thu, 16 Jun 2011 11:36:16 +0100 Message-ID: <4DF9DCA0.9020200@cam.ac.uk> References: <87pqme43gr.fsf@ucl.ac.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from eggs.gnu.org ([140.186.70.92]:57664) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QXCaG-0003Hy-OL for emacs-orgmode@gnu.org; Thu, 16 Jun 2011 09:26:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QXCaA-0003jj-Kb for emacs-orgmode@gnu.org; Thu, 16 Jun 2011 09:26:08 -0400 Received: from ppsw-41.csi.cam.ac.uk ([131.111.8.141]:39270) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QXCa9-0003im-KH for emacs-orgmode@gnu.org; Thu, 16 Jun 2011 09:26:01 -0400 Received: from sal.eng.cam.ac.uk ([129.169.126.133]:57551) by ppsw-41.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.156]:465) with esmtpsa (PLAIN:ss2059) (TLSv1:DHE-RSA-CAMELLIA256-SHA:256) id 1QX9vt-0000sK-Pv (Exim 4.72) for emacs-orgmode@gnu.org (return-path ); Thu, 16 Jun 2011 11:36:17 +0100 In-Reply-To: <87pqme43gr.fsf@ucl.ac.uk> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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 Thanks Eric. I think you're right. It would make sense to use \begin{equation} \end{equation} with HTML export to number equations. I've put a minimal example below showing what is happening. -- #+TITLE: Equation numbering #+STYLE: * Numbered in HTML export / Not numbered in LaTeX Equation is numbered and can be referenced in HTML export. Equation is *not* numbered in LaTeX export. $$ \label{eq:1} y = ax + b $$ Equation \ref{eq:1} is a polynomial of order 1. * Not numbered in HTML / Numbered in LaTeX Equation is not numbered but can be referenced in HTML export. Equation is numbered in LaTeX export. \begin{equation} \label{eq:1} y = ax + b \end{equation} Equation \ref{eq:1} is not numbered but can be referenced in HTML export. It is numbered in LaTeX export. -- I also think the right behaviour would be to have a numbered equation in the second case in both HTML and LaTeX, and an unnumbered equation in the first case in both HTML and LaTeX. Does everyone agree? I'd be happy to try and change the behaviour of the HTML export if someone can point me in the right direction. Cheers, Sam On 16/06/11 08:53, Eric S Fraga wrote: > Samuel Sinayoko writes: > > >> Dear list, >> >> I've been trying to write short scientific reports that I can export to >> both LaTeX and HTML. So far I've managed to figure out how to include >> equations, images, references, and how to include labels and cross >> reference between all these things. >> >> The only problem I have is that I can't get numbered equations in both >> LaTeX and HTML. Using the snippet below, I'm able to get a numbered >> equation in HTML but not in LaTeX. I've put >> loadFiles: ["extensions/eqn-number.js"], >> in jsMath/easy/load.js. If I replace the $$ by >> \begin{equation} and \end{equation}, I get a numbered equation in LaTeX >> but not in HTML. >> >> How can I get numbered equations in both HTML and LaTeX? >> > I can't help you wish HTML unfortunately but I can summarise the issue > in LaTeX. > > With the standard document class (article say), equations can be either > "displayed" or "inline". Only displayed equations are numbered and then > only if you use =equation= (or =align=, =eqnarray=, etc). $$ ... $$ is > equivalent to \[ ... \] which is essentially equivalent to the > unnumbered version of \begin{equation} (aka \begin{equation*}). > > The trick would be to get the HTML exporter to apply the same processing > to \begin{equation} ... \end{equation} as it does to $$ ... $$, I guess? >