无法在RStudio中安装devtools - 未找到依赖项(xml2/rversions)

Question

我是R和RStudio的新手,但他正在努力学习并整理一个ShinyApps应用程序.我无法通过Shinyapps进程的第1步,即在RStudio中安装devtools包.我认为根本原因是没有安装"xml2"软件包依赖项,但我似乎无法解决这个问题而且我不明白该怎么做.

我在戴尔笔记本电脑上使用Linux Mint Cinnamon 17.1.我从软件管理器安装了RStudio.在试图解决devtools安装过程中的错误,我已经尝试使用安装R和RStudio从稍微更新包下载apt-get的,我已经尝试安装xml2和rversions从RStudio(不可用),我试着用单引号和双引用,我已经尝试添加dependency=true到所有RStudio安装尝试,我已经多次重启RStudio和机器......我没有想法......帮助？

以下是RStudio中devtools安装命令的输出,加上"版本"的输出以防万一.

install.packages("devtools")
Installing package into ‘/home/[MyHomeDir]>/R/i686-pc-linux-gnu-library/3.0’
(as ‘lib’ is unspecified)
Warning in install.packages :
  dependency ‘xml2’ is not available
also installing the dependency ‘rversions’

trying URL 'http://cran.rstudio.com/src/contrib/rversions_1.0.1.tar.gz'
Content type 'application/x-gzip' length 4624 bytes
opened URL
==================================================
downloaded 4624 bytes

trying URL 'http://cran.rstudio.com/src/contrib/devtools_1.8.0.tar.gz'
Content type 'application/x-gzip' length 141487 bytes (138 Kb)
opened URL
==================================================
downloaded 138 Kb

ERROR: dependency ‘xml2’ is not available for package ‘rversions’
* removing ‘/home/[MyHomeDir]/R/i686-pc-linux-gnu-library/3.0/rversions’
Warning in install.packages :
  installation of package ‘rversions’ had non-zero exit status
ERROR: dependency ‘rversions’ is not available for package ‘devtools’
* removing ‘/home/[MyHomeDir]/R/i686-pc-linux-gnu-library/3.0/devtools’
Warning in install.packages :
  installation of package ‘devtools’ had non-zero exit status

The downloaded source packages are in
        ‘/tmp/RtmpNJIGkV/downloaded_packages’

version
               _                           
platform       i686-pc-linux-gnu           
arch           i686                        
os             linux-gnu                   
system         i686, linux-gnu             
status                                     
major          3                           
minor          0.2                         
year           2013                        
month          09                          
day            25                          
svn rev        63987                       
language       R                           
version.string R version 3.0.2 (2013-09-25)
nickname       [nickname redacted]            

Answer 1

我在Ubuntu 14.04上运行了一个旧的R版本(3.0.2).这就是我必须更新R的方式:

• 打开源列表 sudo vi /etc/apt/sources.list
• 添加一个镜面镜(即deb http://cran.rstudio.com/bin/linux/ubuntu trusty/)
• 添加APT键sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9(参见cran)
• 现在更新R. sudo apt-get install r-base

现在我能够安装devtools.在我的情况下ALL,安装打包更新,所以这可能需要一些时间.

Answer 2

更新到最新版本的 R，然后按照链接中提供的说明进行操作，您应该能够安装它。

https://github.com/hadley/devtools