R语言数据操作练习_r-data-practice.zip

# R语言数据操作练习 ## 练习列表 * [股票市场数据](stock-market-data.md) ## 学习资源推荐 * [Base R cheatsheet](http://github.com/rstudio/cheatsheets/raw/master/base-r.pdf) * [RStudio IDE cheatsheet](https://github.com/rstudio/cheatsheets/raw/master/rstudio-ide.pdf) * [Regular Expressions](https://www.rstudio.com/wp-content/uploads/2016/09/RegExCheatsheet.pdf) * [Work with Strings cheatsheet](https://github.com/rstudio/cheatsheets/raw/master/strings.pdf) * [data.table cheatsheet](https://github.com/rstudio/cheatsheets/raw/master/datatable.pdf) ## 贡献数据和练习