如何在 Windows 上安装 cran 软件包？
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How to install cran packages on Windows?
提问by rsk82
I'm typing for example:
我正在输入例如：
install.packages('TTR')
output is:
输出是：
--- Please select a CRAN mirror for use in this session ---
trying URL 'http://mirrors.softliste.de/cran/bin/windows/contrib/2.12/TTR_0.20-2.zip'
Content type 'application/zip' length 237131 bytes (231 Kb)
opened URL
downloaded 231 Kb
package 'TTR' successfully unpacked and MD5 sums checked
The downloaded packages are in
C:\Documents and Settings\Administrator\Local Settings\Temp\Rtmp33oIzT\downloaded_packages
But then, even after restarting environment functions belonging to that package aren't recognized, for example EMA() -> Error: could not find function "EMA". Is there any command command to actually install these downloaded packages.
但是，即使在重新启动属于该包的环境函数后也无法识别，例如 EMA() -> 错误：找不到函数“EMA”。是否有任何命令命令可以实际安装这些下载的软件包。
There is "R CMD INSTALL" command to use in shell but when I type:
在 shell 中可以使用“R CMD INSTALL”命令，但是当我输入时：
R CMD INSTALL TTR
I get:
我得到：
Warning: invalid package 'TTR'
Error: ERROR: no packages specified
回答by Joshua Ulrich
A copy of An Introduction to Rcomes with your R installation. Had you glanced at the Table of Contents, you would have seen the Packagessection, where your question is answered in the second sentence.
回答by Chase
As hinted at in the comment, installing and gaining access to packages is a two step process. You've got the first step down with install.packages()but then you also need to load the library in your R script to gain access to those functions with library(YourPackageHere).
正如评论中所暗示的，安装和获得对包的访问是一个两步过程。您已经完成了第一步，install.packages()但随后您还需要在 R 脚本中加载库，以便使用library(YourPackageHere).
See this questionfor other details.
有关其他详细信息，请参阅此问题。
