Sometimes you may not like the default values of knitr’s chunk options, and you know how to change them (i.e., knitr::opts_chunk$set()), but it can be tedious to do it for every single document....

本期投稿： 谢益辉  肖楠 knitr： 小编的好哥（ji）们（you）KarlBroman大人写了一份《knitr in a knutshell》。买不起书或看长篇文档伤不起的同学们不妨看他的简明教程，外加一门《可重复性研究》的课程。

2010年年底我写了两篇文章，关于Sweave/LyX/pgfSweave，顺便引出可重复研究（Reproducible...