Appending a pre-existing PDF to a new created by R Markdown

Publishing Your Results
4

You can use the online tools for merging pdf files. I use the one from foxit software. https://www.foxitsoftware.com/merge-pdf/

For appending images saved as pdf files, use latex.

\begin{center} 
\includegraphics[width=6in]{image1.pdf} 
\end{center}

You can also use the standard image options in knitr.

{r, fig.align="center", fig.cap=c("Caption"), echo=FALSE}
knitr::include_graphics("image2.pdf")
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