Hi John,

Can you clarify your work around here? I wasn't able to follow.

I have a similar problem converting from LaTeX to HTML5 - \label and \ref 
for equations don't work. I'd be super grateful for any advice you could 
offer.

Thanks!
Leena

On Tuesday, 29 June 2021 at 11:23:40 UTC-7 John MacFarlane wrote:

>
> This isn't yet supported, really. But you might be able to
> work around it.
>
> Note:
>
> % pandoc -f latex -t native
> \ref{foo}
> ^D
> [Para [Link ("",[],[("reference-type","ref"),("reference","foo")]) [Str 
> "[foo]"] ("#foo","")]]
>
> So when pandoc parses \ref{foo}, it doesn't just create a string
> [foo]; it creates a link with attributes. You could use a lua
> filter to turn this into something that mathjax can consume
> (raw tex, I would imagine).
>
> Just let us know what you want to appear in the HTML, and we can
> show you how to do it.
>
> Ian Price <ianpr...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
>
> > Hello,
> > My university is looking into the options for converting various notes, 
> > exercises sheets, presentations, etc. from latex generated pdf into a 
> more 
> > accessible format. This basically means converting to html + mathjax 
> > because this tends to work better for screen readers. Converting beamer 
> > seems to be impossible, but for notes pandoc (and some others like 
> latexml) 
> > is generally giving good output, however the major issue is cross 
> > referencing between text and maths blocks.
> >
> > In short, mathjax can handle internal links from maths blocks to other 
> > maths blocks, and pandoc can handle links to other parts of pandoc 
> > documents, except when a document makes specific reference to an 
> equation.
> > For example, suppose we have the following mwe.tex cut out from some 
> > electromagnetism notes
> > ---
> > \documentclass[12pt]{article} 
> > \begin{document} 
> > \begin{equation} 
> > J \equiv \frac{dI}{da_{\perp}} = \rho v. 
> > \label{volume-current-density} 
> > \end{equation} 
> > The total current crossing a surface $S$ can be calculated by 
> integrating 
> > Eq. (\ref{volume-current-density}): 
> > \end{document}
> > ---
> > When converted to markdown, we get the following
> > ---
> > $$J \equiv \frac{dI}{da_{\perp}} = \rho v. 
> > \label{volume-current-density}$$ 
> > 
> > The total current crossing a surface $S$ can be calculated by 
> > integrating Eq. 
> > 
> ([\[volume-current-density\]](#volume-current-density){reference-type="ref" 
> > reference="volume-current-density"}):
> > ---
> > The link to the label volume-current-density is clearly broken and when 
> I 
> > get my html file it does nothing in particular.
> >
> > One solution I've seen is to convert the label references to the syntax 
> > used by, e.g., pandoc-crossref, but this involves me editing the 
> markdown 
> > by hand. Is there an automatic way to convert these? 
> >
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