格式有点乱掉了。。

谢谢ryoeng, 这就去瞧瞧

在安装lubridate这个package的时候，出现以下问题：

> install.packages("lubridate")
Installing package into ‘\\RSHMSZJ001/U_chenv2$/My Documents/R/win-library/3.2’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.2/lubridate_1.5.0.zip'
Content type 'application/zip' length 650903 bytes (635 KB)
downloaded 635 KB

package ‘lubridate’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
        C:\Users\chenv2\AppData\Local\Temp\RtmpayrruP\downloaded_packages
> library(lubridate)
Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[]) :
  there is no package called ‘stringi’
Error: package or namespace load failed for ‘lubridate’

貌似安装成功了，但是加载不了，是因为其中某个stringi这个package没有安装成功？有谁遇到过这个问题吗？谢谢！