What is the best way to show inline math formulas in org mode?

What is the best way to show inline math formulas in org mode?

[Amos Bird]

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#+OPTIONS: latex:t toc:nil H:3

Hi,

I found that there are ways to write formulas in mathjax or latex in org-mode. But how can I view
them inlinely? Currently I just copy and paste formula images which seems not the right way.

regards,

--
Amos Bird
amosbird@gmail.com

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Re: What is the best way to show inline math formulas in org mode?

[Nicolas Goaziou]

Hello,

Amos Bird <amosbird@gmail.com> writes:

> I found that there are ways to write formulas in mathjax or latex in org-mode. But how can I view
> them inlinely? Currently I just copy and paste formula images which
> seems not the right way.

See `org-toggle-latex-fragment' (C-c C-x C-l).

Regards,

-- 
Nicolas Goaziou

Re: What is the best way to show inline math formulas in org mode?

[Amos Bird]

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#+OPTIONS: latex:t toc:nil H:3

Thanks Nicolas. That's cool. But I couldn't get it working.

I tried this simple equation
#+BEGIN_EXAMPLE
\begin{equation}
x=\sqrt{b}
\end{equation}
#+END_EXAMPLE

and got
#+BEGIN_EXAMPLE
 if: File "/tmp/orgtex24112xzL.dvi" wasn’t produced.  Please adjust ‘dvipng’ part of ‘org-preview-latex-process-alist’.
#+END_EXAMPLE

regards,

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Hello,
>
> Amos Bird <amosbird@gmail.com> writes:
>
>> I found that there are ways to write formulas in mathjax or latex in org-mode. But how can I view
>> them inlinely? Currently I just copy and paste formula images which
>> seems not the right way.
>
> See `org-toggle-latex-fragment' (C-c C-x C-l).
>
> Regards,


--
Amos Bird
amosbird@gmail.com

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Re: What is the best way to show inline math formulas in org mode?

[Nicolas Goaziou]

Amos Bird <amosbird@gmail.com> writes:

> Thanks Nicolas. That's cool. But I couldn't get it working.
>
> I tried this simple equation
>
>
> \begin{equation}
> x=\sqrt{b}
> \end{equation}
>
> and got
>
>
> if: File "/tmp/orgtex24112xzL.dvi" wasn’t produced.  Please adjust ‘dvipng’ part of ‘org-preview-latex-process-alist’.

Maybe "dvipng" is not installed on your system.

FWIW, I use `dvisvgm' for `org-preview-latex-default-process'.

Regards,

Re: What is the best way to show inline math formulas in org mode?

[Amos Bird]

dvisvgm doesn't work either but imagemagick does. Thanks!

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Amos Bird <amosbird@gmail.com> writes:
>
>> Thanks Nicolas. That's cool. But I couldn't get it working.
>>
>> I tried this simple equation
>>
>>
>> \begin{equation}
>> x=\sqrt{b}
>> \end{equation}
>>
>> and got
>>
>>
>> if: File "/tmp/orgtex24112xzL.dvi" wasn’t produced.  Please adjust ‘dvipng’ part of ‘org-preview-latex-process-alist’.
>
> Maybe "dvipng" is not installed on your system.
>
> FWIW, I use `dvisvgm' for `org-preview-latex-default-process'.
>
> Regards,


-- 
Amos Bird
amosbird@gmail.com

Re: What is the best way to show inline math formulas in org mode?

[Amos Bird]

Um, does this formula image look correct? I feel it's a bit small and subrendered.

[[file:/home/amos/Pictures/Screenshots/img-2017-09-18-210416.png]]

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Amos Bird <amosbird@gmail.com> writes:
>
>> Thanks Nicolas. That's cool. But I couldn't get it working.
>>
>> I tried this simple equation
>>
>>
>> \begin{equation}
>> x=\sqrt{b}
>> \end{equation}
>>
>> and got
>>
>>
>> if: File "/tmp/orgtex24112xzL.dvi" wasn’t produced.  Please adjust ‘dvipng’ part of ‘org-preview-latex-process-alist’.
>
> Maybe "dvipng" is not installed on your system.
>
> FWIW, I use `dvisvgm' for `org-preview-latex-default-process'.
>
> Regards,


-- 
Amos Bird
amosbird@gmail.com

Re: What is the best way to show inline math formulas in org mode?

[Nicolas Goaziou]

Hello,

Amos Bird <amosbird@gmail.com> writes:

> Um, does this formula image look correct? I feel it's a bit small and subrendered.
>
> [[file:/home/amos/Pictures/Screenshots/img-2017-09-18-210416.png]]

I cannot see this, since this is a local file. You may want to tweak
`org-format-latex-options'.

Also, it sounds like you don't have a working LaTeX installation (e.g.
Texlive)

Regards,

-- 
Nicolas Goaziou

Re: What is the best way to show inline math formulas in org mode?

[Amos Bird]

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#+OPTIONS: latex:t toc:nil H:3

Hi,

Hmm, seems org-mime is broken again...

I have an fine working latex env. Though I don't know what a decent inline formula looks like :)

regards,

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Hello,
>
> Amos Bird <amosbird@gmail.com> writes:
>
>> Um, does this formula image look correct? I feel it's a bit small and subrendered.
>>
>> [[file:/home/amos/Pictures/Screenshots/img-2017-09-18-210416.png]]
>
> I cannot see this, since this is a local file. You may want to tweak
> `org-format-latex-options'.
>
> Also, it sounds like you don't have a working LaTeX installation (e.g.
> Texlive)
>
> Regards,


--
Amos Bird
amosbird@gmail.com

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Re: What is the best way to show inline math formulas in org mode?

[Eric S Fraga]

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On Tuesday, 19 Sep 2017 at 13:25, Amos Bird wrote:
> Hi,
>
> Hmm, seems org-mime is broken again…
>
> I have an fine working latex env. Though I don't know what a decent
> inline formula looks like :)

It looks pretty much as you have got.  You can customise the actual
image created using org-format-latex-options.  You can change the size,
e.g. ":scale 2.0" and colours.

-- 
: Eric S Fraga via Emacs 26.0.50, Org release_9.0.10-729-gb792e2

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Re: What is the best way to show inline math formulas in org mode?

[edgar]

Hi Amos,

I am an inexpert user of Emacs, and that is why I think that I can help 
you. See the instructions below. Spoiler alert: the last line reads: "If 
you get your file .. I don't know how to help you."

The idea is:
1. Run emacs like this: emacs -Q
2. Check that you have a recent version of Emacs
    1) (assuming that you are running in linux) Check your Emacs version:
       a. [Alt] + [x] (in Emacs lingo, this translates to M-x, and lets 
you run commands)
       b. when you get a prompt, type <emacs-version> (without < >)
       c. type [Enter] (in Emacs lingo, this translates to RET most 
times)
    2) If you get a message with a version older than 24.4, your Emacs 
may be too old, but still work (may be).
3. Check that you have a recent version of Org
    Do the same as step 2, but replace <emacs-version> with 
<org-version>. If your version is older than 8.7, I would suggest 
updating.
4. Check that you are actually running the right command
    1) Create a new buffer
       a. C-x b: [Control] + [x], then [b]
       b. test.org: type <test.org>
       c. RET
    2) Change onto org-mode by doing M-x org-mode RET
    3) Copy (kill) this as it is and paste it (yank it) on the buffer 
that you just created:   \(a = 2\)
    4) Put the cursor (point) on the <=> and do C-c C-x C-l
    5) If you don't see your equation, continue to step 5
5. If step 4 didn't work, make sure that you could produce the file in 
your computer
    1) Export the test.org to LaTeX by doing C-c C-e l l
    2) If it asks you for a name file, just type <test.tex> (without < > 
!)
    3) Open the file (find the file): C-x C-f <test.tex> (without < >)
    4) Do what you would normally do to produce your PDF
    5) If you get your file, it means that your Org configuration is not 
really working. Try testing your dvipng, dvisvgm or convert 
(imagemagick) commands. Imagemagick is not really good in terms of image 
quality, in my opinion, but you can play with the scale value (as 
suggested by Eric? Nicolas?). Other than that, I don't know how to help 
you.

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