\documentclass{article}
\usepackage{pdfpages}
%\VignetteIndexEntry{pdp-introduction}
%\VignetteKeywords{R, partial dependence plots, PDPs, marginal effect plots, feature effect plots, machine learning}
%\VignettePackage{pdp}
%\VignetteEncoding{UTF-8}

\begin{document}
\includepdf[pages=-, fitpaper=true]{pdf/pdp-intro.pdf}
\end{document}
