每日背诵一个两个与我研究相关的介绍。这些知识写在纸上记录下来没有用，我必须把他们刻在脑子里！
ggmap: The ggmap package allows you to use tools from Google Maps directly from R.
The ggmap package allows you to do this by using tools from Google Maps directly from R. This package allows you to pull a base map from Google Maps and a few other map servers, which you can then plot and to which you can add points, polygons, lines, and other elements using ggplot2 functions. This package uses the Google Maps API, so you should read their terms of service and make sure you follow them if using this package.
plotly: From the plotly package documentation, the purpose of the plotly package is to allow a user to “Easily translate ggplot2 graphs to an interactive web-based version and / or create custom web-based visualizations directly from R.”
Ubuntu is an open source software platform that runs everywhere from the smartphone, the tablet and the PC to the server and the cloud. Ubuntu 是世界领先的开源操作系统。目前广泛应用于个人电脑，平板，智能手机，IoT/智能物联网， 服务器和云端上。
RStudio is a free and open-source integrated development environment (IDE) for R, a programming language for statistical computing and graphics. RStudio was founded by JJ Allaire,[5] creator of the programming language ColdFusion. Hadley Wickham is the Chief Scientist at RStudio.[6] RStudio是R语言的一种集成开发环境，它是免费自由软件。RStudio同时有桌面版和服务器版。RStudio基于C++开发，它的图形用户界面基于Qt。 RStudio is an integrated development environment (IDE) for R. It includes a console, syntax-highlighting editor that supports direct code execution, as well as tools for plotting, history, debugging and workspace management.