Mac上R安装的问题集合（转http://blog.sciencenet.cn/blog-1351135-928205.html）

R 官网下载：https://www.r-project.org/about.html

Rstudio：http://www.rstudio.com

打开后出现这个问题，红字（参考http://stackoverflow.com/questions/9689104/installing-r-on-mac-warning-messages-setting-lc-ctype-failed-using-c）：

During startup - Warning messages:
1: Setting LC_CTYPE failed, using "C"
2: Setting LC_COLLATE failed, using "C"
3: Setting LC_TIME failed, using "C"
4: Setting LC_MESSAGES failed, using "C"
5: Setting LC_PAPER failed, using "C"
[R.app GUI 1.50 (6126) x86_64-apple-darwin9.8.0]

WARNING: You're using a non-UTF8 locale, therefore only ASCII characters will work. Please read R for Mac OS X FAQ (see Help) section 9 and adjust your system preferences accordingly. [History restored from /Users/nemo/.Rapp.history]

解决方法：

Open Terminal

Write or paste in: defaults write org.R-project.R force.LANG en_US.UTF-8

Close Terminal

Start R