RMarkdown/Bookdown: Putting R markdown/bookdown cross references into a plot legend in a R chunk

Publishing Your Results
1

I have a bookdown document with many equations with equation numbers. I want to put an equation number reference in a plot legend - pseudocode

\begin{equation}
\label{eq:Logistic4P}
{Absorbance = D + \frac{A-D}{1+\left(\frac{Concentration}{C}\right)^{1/B}}}
\end{equation}

(ref:eqLog) @ref(eq:Logistic4P)

plot(y~x)
legend('topright',legend=some reference to equation number)

Of course, the job is to get the bookdown equation reference into the r chunk, similar to putting a cross reference into a figure caption. Can someone point me in the right direction and just tell me it can't be done?

Thanks
David

2

References are resolved as post processing step in bookdown, so it is not possible to include a resolved reference in a content that is used in processing to create text in an image like a plot legend.

For Image caption it works, because they are text written under image that can be replace in a post processing step.

You could open a feature request but I am not sure how we could make the reference be resolved during the knitting process unfortunately. So for now it can't be done.

3

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