* How can I wrap the subscript into a math environment in Org-mode?
@ 2015-11-22 8:51 Lei Zhe
2015-11-22 13:54 ` John Kitchin
0 siblings, 1 reply; 2+ messages in thread
From: Lei Zhe @ 2015-11-22 8:51 UTC (permalink / raw)
To: emacs-orgmode@gnu.org
I have some subscripts in my org file like B_25, B_30. These
subscripts can be exported to LaTeX like B_{25}, B_{30}. However, I
want part of the subscripts like B to be exported as italic /B/. As
one solution for this, I can wrap these thing into a math environment
like \(B_{25}\). But since my file contains large numbers of these
subscripts, I would like to implement this in a programmable way.
I found a subscript filter function in org-mode, so I tried to use it
to wrap the subscripts by
(defun wrap-subscript-with-math-environment (contents backend info)
(when (eq backend 'latex)
(format "\\(%s\\)" contents)))
(add-to-list 'org-export-filter-subscript-functions
'wrap-subscript-with-math-environment)
However, the results exported are like B\($_{\text{25}}$ \). It seems
like the subscript filter contents only contain _25 part. Does anyone
have some solutions about this?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: How can I wrap the subscript into a math environment in Org-mode?
2015-11-22 8:51 How can I wrap the subscript into a math environment in Org-mode? Lei Zhe
@ 2015-11-22 13:54 ` John Kitchin
0 siblings, 0 replies; 2+ messages in thread
From: John Kitchin @ 2015-11-22 13:54 UTC (permalink / raw)
To: Lei Zhe; +Cc: emacs-orgmode@gnu.org
it sounds like you are looking for a way to conveniently entering
equations in LaTeX to me. This is seems like a case where you cannot
have it both ways, that is convenient subscripts in math and text that
are easy to tell the difference between, e.g. in H_{2}O you do not want
the letters in math mode, but in e^{x}=3 you do. It is hard to see how a
filter function would always do the right thing here.
The easiest thing is probably to make a function to make it simple to
add equations, e.g. this function will wrap a selected region in $$ (or
\(\) with a prefix arg) or insert those so you can type in the equation.
I bind it to super-4 which is pretty easy to use. you could also try
some kind of yasnippet approach.
(defun latex-math-region-or-point (&optional arg)
(interactive "P")
(let ((chars (if arg
'("\\(" . "\\)")
'("$" . "$"))))
(if (region-active-p)
(progn
(goto-char (region-end))
(insert (car chars))
(goto-char (region-beginning))
(insert (cdr chars)))
(insert (concat (car chars) (cdr chars)))
(backward-char (length (cdr chars))))))
(define-key global-map (kbd "s-4") 'latex-math-region-or-point)
Lei Zhe writes:
> I have some subscripts in my org file like B_25, B_30. These
> subscripts can be exported to LaTeX like B_{25}, B_{30}. However, I
> want part of the subscripts like B to be exported as italic /B/. As
> one solution for this, I can wrap these thing into a math environment
> like \(B_{25}\). But since my file contains large numbers of these
> subscripts, I would like to implement this in a programmable way.
>
> I found a subscript filter function in org-mode, so I tried to use it
> to wrap the subscripts by
>
> (defun wrap-subscript-with-math-environment (contents backend info)
> (when (eq backend 'latex)
> (format "\\(%s\\)" contents)))
>
> (add-to-list 'org-export-filter-subscript-functions
> 'wrap-subscript-with-math-environment)
> However, the results exported are like B\($_{\text{25}}$ \). It seems
> like the subscript filter contents only contain _25 part. Does anyone
> have some solutions about this?
--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu
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