Support math equation numbering and its corresponding reference

[facat]

No description provided.

[jhrmnn]

This would be indeed a great feature to have.

[abnerlee]

Is there any markdown syntax to support this feature?

[jhrmnn]

This should all be handled by mathjax, but it does not seem to work in Typora. I'm not sure how Typora calls mathjax, but it might be that mathjax is called separately for each equation and hence it doesn't know about the references. To sum up, I imagine this would work in Typora:

$$
\begin{equation}
a^2+b^2=c^2
\label{eq:pythagoras}
\tag{1}
\end{equation}
$$

Referring to Eq. $\eqref{eq:pythagoras}$.

[jhrmnn]

Actually, it does seem to work when pasted all at once in a fresh new document.

But after editing (while changing nothing), the math block stays unprocessed,

There might be some useful information here.

[abnerlee]

Thanks, I will check the doc

[RomainBui]

I would like to second here, this would be a great future.

[ropeonfire]

I would love to have this feature -- I've attempted to modify the MathJax.Hub.Config to include equationNumbers (accessed by toggling the DevTools):
TeX: { extensions: ["noUndefined.js", "autoload-all.js", "AMSmath.js", "AMSsymbols.js"], equationNumbers: { autoNumber: "AMS" } }
This seems to have no effect - and I'm not even sure it's supposed to since I know nothing of html, etc...

[ropeonfire]

I've modified the MathJax.Hub.Config in "...\Typora\resources\app\window.html" to include auto-numbering, as shown in the snippet in my comment above. This allows the use of the \label syntax; the equations are auto-numbered in the order they are written/processed, as expected. Also, the "multiply defined" error will return if the equation is edited after it is initially rendered. If this happens, one can get things re-rendered and re-numbered appropriately by closing/opening the file.

Remaining issues:

• In the PDF export, references generated by \eqref{} or \ref{} appear to be clickable but don't actually seem to be associated and do not jump to the referenced equations. OTH, the references in the .html export seem to work as expected...Wish it were the other way around... :P
• It may be possible (?) to somehow use MathJax.Hub.Queue and avoid the need to close/reopen the file to fix multiply-defined errors and/or force the equations to be renumbered from top to bottom (see the relevant MathJax docs here). Unfortunately I am not familiar with where this config needs to be included...I've tried adding it to "window.html" with poor results. I might just be putting it in the wrong place (I'm just blindly plugging away here). Any ideas?

[truefalsename]

On a mac you can turn on equation autonumbering by editing /Applications/Typora.app/Contents/Resources/TypeMark/lib/MathJax-2.6.1/jax/input/TeX/config.js

changing "none" to "AMS" or "all" in equationNumbers:{autoNumber:"none",formatNumber:function(a){return a},formatTag:function(a){return"("+a+")"}.

[ickc]

I configured the MathJax in /Applications/Typora.app/Contents/Resources/TypeMark/index.html and it would work, except that the numbering could have problems.

It seems typora uses the MathJax to rendered it once and stored the resulted CHTML (or HTML+CSS?). The problem then is if I edit the document non-linearly, the numbering will be incorrect. In fact, when I tested it, even if I have only 1 numbered equation, editing the same equation repeatedly will results in incrementing the number count on that equation.

Given how typora works (live view on the source), this behavior on the preview is acceptable. However, when it is exported as HTML, the results would still be the same. So I suggest it to do a complete rendering at the time of export to yield a correct result.

[abnerlee]

#316

[abnerlee]

Already add such option