ClaudiusL

You can set default chunk options *outside* the document just like you do it *inside*:

    knitr::opts_chunk$set("foobar" = "baz") # set "foobar" = "baz" as default chunk option

Full example:

# `control.R`

    library(rmarkdown)
    

ClaudiusL

\documentclass{article}

\begin{document}

<<setup, include=FALSE>>=
knitr::opts_chunk$set(echo = TRUE, max.print = NA)
@

<<echo=FALSE, results='hide'>>=
library(DBI)