r - Equation Numbering in Rmarkdown - For Export to Word

Question

When kniting a Rmarkdown file to MS Word, is there a way to have equations labled with a number that is flushed to the right?

For example:

When typing this in Rmarkdown:

$$a + b = c$$

I need it to end up in Word as:

a + b = c (1)

I saw the code below somewhere else, but it does not seem to work when kniting to Word...

egin{equation} label{eq-abc} a + b = c end{equation}

Thanks!

Answer 1

@Sholom's comment regarding pandoc-crossref inspired me to have a read, I was not previously aware of it and it is not available as an extension to rmarkdown currently.

It is entirely possible to achieve basic equation numbering with this "filter".

Markdown

---
output:
  word_document:
    pandoc_args: ["-Fpandoc-crossref"]
---


$$a^2 + b^2 = c^2$$ {#eq:eqn1}

$$log xy = log x + log y$$ {#eq:eqn2}

$$frac{df}{dt} = lim_{ho0}frac{f(t+h)-f(t)}{h}$$ {#eq:eqn3}

Output

pandoc-crossref

The binary releases of the code are located here. From a windows machine, I dropped the pandoc-crossref.exe into my Pandoc install folder alongside pandoc.exe and that was sufficient to allow my markdown to render.

N.B. I did this with a standalone install of Pandoc, if you are using the version bundled with RStudio you may need to install differently.