编织到pdf时如何阻止rmarkdown生成“附加包”

Question

I use rmarkdown for my intro to data science class. I recently lost a lot of points for formatting on a few homework assignments.

1. I would like to know if there is a way of getting rid of the "attaching" packages output when knitting to .pdf?

I have attached an image of the output and some formatting issues to this post.

Answer 1

Either in code:

knitr::opts_chunk$set(echo = FALSE, warning = FALSE, message = FALSE)

or in Rmarkdown format:

#+ echo = FALSE, warning = FALSE, message = FALSE

Look it up in Yihui's book , it's a good exercise. You can also try to silence R itself:

debug.code <- FALSE # try TRUE to see the difference
options(warn = ifelse(debug.code, 1, -1), verbose = debug.code)