LaTeX export for numbered equations

LaTeX export for numbered equations

[Sebastien Vauban]

Hello,

I'm trying to get numbered equations in Beamer, hence using the begin_equation
block, but the formula is not correctly translated to LaTeX, and I have no
clue why...

Here an ECM:

--8<---------------cut here---------------start------------->8---
#+TITLE:     ECM Equations
#+DATE:      2012-06-13
#+Time-stamp: <2012-06-03 Sun 23:13 Fabrice on MEDIACENTER>

#+startup: beamer
#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation,t]
#+BEAMER_HEADER_EXTRA: \usetheme{default}\usecolortheme{default}
#+BEAMER_FRAME_LEVEL: 1
#+COLUMNS: %40ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)

* Equations

- This is a displayed formula, not numbered:
  \[\frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }\]

- These should be numbered:

#+begin_equation
\frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
#+end_equation

#+begin_equation
\frac{1}{\sqrt{2\pi\sigma^2}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}
#+end_equation

* LaTeX output

- The first equation, unnumbered, is correctly translated to:

    \[\frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }\]

- The two other are wrongly translated:

  + the first one with two curly brackets escaped:
                                   v                               v
    \begin{equation}
    \frac{1}{\sqrt{2\pi\sigma^2}}e^\{ -\frac{(x-\mu)^2}{2\sigma^2} \}
    \end{equation}

  + the last one with one curly bracket escaped:
                                   v
    \begin{equation}
    \frac{1}{\sqrt{2\pi\sigma^2}}e^\{-\frac{(x-\mu)^2}{2\sigma^2}}
    \end{equation}
--8<---------------cut here---------------end--------------->8---

Best regards,
  Seb

-- 
Sebastien Vauban

Re: LaTeX export for numbered equations

[Nick Dokos]

Sebastien Vauban <wxhgmqzgwmuf@spammotel.com> wrote:

> Hello,
> 
> I'm trying to get numbered equations in Beamer, hence using the begin_equation
> block, but the formula is not correctly translated to LaTeX, and I have no
> clue why...
> 


Confirmed (except that I have to comment out hyperref in order to
process the latex file - I get fatal errors otherwise), plus the new
exporter chokes on the same example with the appended backtrace.

Nick

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("^[ 	]*\\[\\(NO-\\)?DEFAULT-PACKAGES\\][ 	]*\n?" nil)
  (if (string-match "^[ 	]*\\[\\(NO-\\)?DEFAULT-PACKAGES\\][ 	]*\n?" tpl) (setq rpl (if (or (match-end 1) (not def-pkg)) "" (org-latex-packages-to-string def-pkg snippets-p t)) tpl (replace-match rpl t t tpl)) (if def-pkg (setq end (org-latex-packages-to-string def-pkg snippets-p))))
  (let (rpl (end "")) (if (string-match "^[ 	]*\\[\\(NO-\\)?DEFAULT-PACKAGES\\][ 	]*\n?" tpl) (setq rpl (if (or (match-end 1) (not def-pkg)) "" (org-latex-packages-to-string def-pkg snippets-p t)) tpl (replace-match rpl t t tpl)) (if def-pkg (setq end (org-latex-packages-to-string def-pkg snippets-p)))) (if (string-match "\\[\\(NO-\\)?PACKAGES\\][ 	]*\n?" tpl) (setq rpl (if (or (match-end 1) (not pkg)) "" (org-latex-packages-to-string pkg snippets-p t)) tpl (replace-match rpl t t tpl)) (if pkg (setq end (concat end "\n" (org-latex-packages-to-string pkg snippets-p))))) (if (string-match "\\[\\(NO-\\)?EXTRA\\][ 	]*\n?" tpl) (setq rpl (if (or (match-end 1) (not extra)) "" (concat extra "\n")) tpl (replace-match rpl t t tpl)) (if (and extra (string-match "\\S-" extra)) (setq end (concat end "
 \n" extra)))) (if (string-match "\\S-" end) (concat tpl "\n" end) tpl))
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  (let ((out (org-export-as backend subtreep visible-only body-only ext-plist noexpand))) (with-temp-buffer (insert out) (let ((coding-system-for-write org-export-coding-system)) (write-file file))))
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 e org-e-html)) (org-e-html-export-to-html (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) ((eql --cl-var-- (quote 98)) (require (quote org-e-html)) (org-open-file (org-e-html-export-to-html (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) ((eql --cl-var-- (quote 111)) (require (quote org-e-odt)) (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) ((eql --cl-var-- (quote 79)) (require (quote org-e-odt)) (org-open-file (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) ((eql --cl-var-- (quote 70)) (require (quote org-e-publish)) (org-e-publish-current-file (memq (quote force) optns))) ((eql --cl-va
 r-- (quote 80)) (require (quote org-e-publish)) (org-e-publish-current-project (memq (quote force) optns))) ((eql --cl-var-- (quote 88)) (require (quote org-e-publish)) (let ((project (assoc
  (org-icompleting-read "Publish project: " org-e-publish-project-alist nil t) org-e-publish-project-alist))) (org-e-publish project (memq (quote force) optns)))) ((eql --cl-var-- (quote 69)) (require (quote org-e-publish)) (org-e-publish-all (memq (quote force) optns))) (t (error "No command associated with key %s" (char-to-string raw-key)))))
  (case (if (< raw-key 27) (+ raw-key 96) raw-key) (113 nil) ((65 78 85) (require (quote org-e-ascii)) (let ((outbuf (org-export-to-buffer (quote e-ascii) "*Org E-ASCII Export*" (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns) (\` (:ascii-charset ...))))) (with-current-buffer outbuf (text-mode)) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window outbuf)))) ((97 110 117) (require (quote org-e-ascii)) (org-e-ascii-export-to-ascii (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns) (\` (:ascii-charset (\, (case raw-key (97 ...) (110 ...) (t ...))))))) (76 (require (quote org-e-latex)) (let ((outbuf (org-export-to-buffer (quote e-latex) "*Org E-LaTeX Export*" (memq (quote subtree) optns) (memq (quote v
 isible) optns) (memq (quote body) optns)))) (with-current-buffer outbuf (latex-mode)) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window outbuf)))) (108 (require (q
 uote org-e-latex)) (org-e-latex-export-to-latex (require (quote org-e-latex)) (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (112 (require (quote org-e-latex)) (org-e-latex-export-to-pdf (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (100 (require (quote org-e-latex)) (org-open-file (org-e-latex-export-to-pdf (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (72 (require (quote org-e-html)) (let ((outbuf (org-export-to-buffer (quote e-html) "*Org E-HTML Export*" (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (with-current-buffer outbuf (if (featurep (quote nxhtml-mode)) (nxhtml-mode) (nxml-mode))) (when org-export-show-temporary-export-
 buffer (switch-to-buffer-other-window outbuf)))) (104 (require (quote org-e-html)) (org-e-html-export-to-html (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) opt
 ns))) (98 (require (quote org-e-html)) (org-open-file (org-e-html-export-to-html (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (111 (require (quote org-e-odt)) (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (79 (require (quote org-e-odt)) (org-open-file (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (70 (require (quote org-e-publish)) (org-e-publish-current-file (memq (quote force) optns))) (80 (require (quote org-e-publish)) (org-e-publish-current-project (memq (quote force) optns))) (88 (require (quote org-e-publish)) (let ((project (assoc (org-icompleting-read "Publish project: " org-e-publish-project-alist nil t) org-
 e-publish-project-alist))) (org-e-publish project (memq (quote force) optns)))) (69 (require (quote org-e-publish)) (org-e-publish-all (memq (quote force) optns))) (t (error "No command asso
 ciated with key %s" (char-to-string raw-key))))
  (let* ((input (org-export-dispatch-ui (if (listp org-export-initial-scope) org-export-initial-scope (list org-export-initial-scope)) org-export-dispatch-use-expert-ui)) (raw-key (car input)) (optns (cdr input))) (case (if (< raw-key 27) (+ raw-key 96) raw-key) (113 nil) ((65 78 85) (require (quote org-e-ascii)) (let ((outbuf (org-export-to-buffer (quote e-ascii) "*Org E-ASCII Export*" (memq ... optns) (memq ... optns) (memq ... optns) (\` ...)))) (with-current-buffer outbuf (text-mode)) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window outbuf)))) ((97 110 117) (require (quote org-e-ascii)) (org-e-ascii-export-to-ascii (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns) (\` (:ascii-charset (\, (case raw-key ... ... ...)))))) (76 (
 require (quote org-e-latex)) (let ((outbuf (org-export-to-buffer (quote e-latex) "*Org E-LaTeX Export*" (memq ... optns) (memq ... optns) (memq ... optns)))) (with-current-buffer outbuf (lat
 ex-mode)) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window outbuf)))) (108 (require (quote org-e-latex)) (org-e-latex-export-to-latex (require (quote org-e-latex)) (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (112 (require (quote org-e-latex)) (org-e-latex-export-to-pdf (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (100 (require (quote org-e-latex)) (org-open-file (org-e-latex-export-to-pdf (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (72 (require (quote org-e-html)) (let ((outbuf (org-export-to-buffer (quote e-html) "*Org E-HTML Export*" (memq ... optns) (memq ... optns) (memq ... optns)))) (with-current-buffer outbuf (if (featurep (quote 
 nxhtml-mode)) (nxhtml-mode) (nxml-mode))) (when org-export-show-temporary-export-buffer (switch-to-buffer-other-window outbuf)))) (104 (require (quote org-e-html)) (org-e-html-export-to-html
  (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (98 (require (quote org-e-html)) (org-open-file (org-e-html-export-to-html (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (111 (require (quote org-e-odt)) (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns))) (79 (require (quote org-e-odt)) (org-open-file (org-e-odt-export-to-odt (memq (quote subtree) optns) (memq (quote visible) optns) (memq (quote body) optns)))) (70 (require (quote org-e-publish)) (org-e-publish-current-file (memq (quote force) optns))) (80 (require (quote org-e-publish)) (org-e-publish-current-project (memq (quote force) optns))) (88 (require (quote org-e-publish)) (let ((project (assoc 
 (org-icompleting-read "Publish project: " org-e-publish-project-alist nil t) org-e-publish-project-alist))) (org-e-publish project (memq (quote force) optns)))) (69 (require (quote org-e-pub
 lish)) (org-e-publish-all (memq (quote force) optns))) (t (error "No command associated with key %s" (char-to-string raw-key)))))
  org-export-dispatch()
  call-interactively(org-export-dispatch nil nil)

Re: LaTeX export for numbered equations

[Nick Dokos]

Sebastien Vauban <wxhgmqzgwmuf@spammotel.com> wrote:

> Hello,
> 
> I'm trying to get numbered equations in Beamer, hence using the begin_equation
> block, but the formula is not correctly translated to LaTeX, and I have no
> clue why...
> 
> Here an ECM:
> ... 
> - These should be numbered:
> 
> #+begin_equation
> \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
> #+end_equation
> 
> #+begin_equation
> \frac{1}{\sqrt{2\pi\sigma^2}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}
> #+end_equation
> ... 

The following workaround seems to be effective in both of these cases:

#+begin_equation
#+LATEX:  \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
#+end_equation

Nick

Re: LaTeX export for numbered equations

[Sebastien Vauban]

Hi Nick,

Nick Dokos wrote:
> Sebastien Vauban <wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org> wrote:
>> 
>> I'm trying to get numbered equations in Beamer, hence using the
>> begin_equation block, but the formula is not correctly translated to LaTeX,
>> and I have no clue why...
>
> Confirmed (except that I have to comment out hyperref in order to process
> the latex file - I get fatal errors otherwise),

Weird. I do use hyperref...

> plus the new exporter chokes on the same example with the appended
> backtrace.

Regarding the new exporter (which I can't test -- I have problems when
activating it, still have to look why with emacs -Q and dichotomic search...),
IIRC Beamer is not supported (yet?).

Best regards,
  Seb

-- 
Sebastien Vauban

Re: LaTeX export for numbered equations

[Bastien]

"Sebastien Vauban"
<wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org> writes:

> Regarding the new exporter (which I can't test -- I have problems when
> activating it, still have to look why with emacs -Q and dichotomic search...),
> IIRC Beamer is not supported (yet?).

Yes, it is not.

-- 
 Bastien

Re: LaTeX export for numbered equations

[Sebastien Vauban]

Hi Nick,

Nick Dokos wrote:
> Sebastien Vauban <wxhgmqzgwmuf-geNee64TY+gS+FvcfC7Uqw@public.gmane.org> wrote:
>
>> I'm trying to get numbered equations in Beamer, hence using the begin_equation
>> block, but the formula is not correctly translated to LaTeX, and I have no
>> clue why...
>> 
>> Here an ECM:
>> ... 
>> - These should be numbered:
>> 
>> #+begin_equation
>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
>> #+end_equation
>> 
>> #+begin_equation
>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}
>> #+end_equation
>> ... 
>
> The following workaround seems to be effective in both of these cases:
>
> #+begin_equation
> #+LATEX:  \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
> #+end_equation

I confirm your workaround is working in my case as well -- I would never have
thought doing that. Thanks!

Best regards,
  Seb

-- 
Sebastien Vauban

Re: LaTeX export for numbered equations

[suvayu ali]

Hey Seb,

On Mon, Jun 4, 2012 at 9:41 AM, Sebastien Vauban
<wxhgmqzgwmuf@spammotel.com> wrote:
> Hi Nick,
>
> Nick Dokos wrote:
>> Sebastien Vauban <wxhgmqzgwmuf@spammotel.com> wrote:
>>
>>> I'm trying to get numbered equations in Beamer, hence using the begin_equation
>>> block, but the formula is not correctly translated to LaTeX, and I have no
>>> clue why...
>>>
>>> Here an ECM:
>>> ...
>>> - These should be numbered:
>>>
>>> #+begin_equation
>>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
>>> #+end_equation
>>>
>>> #+begin_equation
>>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}
>>> #+end_equation
>>> ...
>>
>> The following workaround seems to be effective in both of these cases:
>>
>> #+begin_equation
>> #+LATEX:  \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
>> #+end_equation
>
> I confirm your workaround is working in my case as well -- I would never have
> thought doing that. Thanks!
>

I know it should work, but is there any particular reason you need to
use #+begin_equation .. #+end_equation ? The following seems to work for
me well.

  #+begin_latex
    \begin{equation}
      \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
    \end{equation}
  #+end_latex

If you want fontlocking you can even use

  #+begin_src latex :eval yes
    \begin{equation}
      \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
    \end{equation}
  #+end_src

-- 
Suvayu

Open source is the future. It sets us free.

Re: LaTeX export for numbered equations

[Carsten Dominik]

On 4.6.2012, at 08:14, Nick Dokos wrote:

> Sebastien Vauban <wxhgmqzgwmuf@spammotel.com> wrote:
> 
>> Hello,
>> 
>> I'm trying to get numbered equations in Beamer, hence using the begin_equation
>> block, but the formula is not correctly translated to LaTeX, and I have no
>> clue why...
>> 
>> Here an ECM:
>> ... 
>> - These should be numbered:
>> 
>> #+begin_equation
>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
>> #+end_equation
>> 
>> #+begin_equation
>> \frac{1}{\sqrt{2\pi\sigma^2}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}
>> #+end_equation
>> ... 
> 
> The following workaround seems to be effective in both of these cases:
> 
> #+begin_equation
> #+LATEX:  \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
> #+end_equation

You just use

   \begin{equation}
   \frac{1}{\sqrt{2\pi\sigma^2}}e^{ -\frac{(x-\mu)^2}{2\sigma^2} }
   \end{equation}

Entire LaTeX environments should be automatically
protected and passed through for LaTeX export.

- Carsten




> 
> Nick
> 
>