Package e1071下载失败

Question

我希望安装VIM包，以便在RStudio中输入一些丢失的数据，但我在相关的e1071包中遇到错误。

VIM包安装正常，但相关的e1071失败，原因如下：

> install.packages("e1071", dependencies = T)
Installing package into ‘C:/Users/John/Documents/R/win-library/3.3’
(as ‘lib’ is unspecified)

  There is a binary version available but the source version is later:
      binary source needs_compilation
e1071  1.6-7  1.6-8              TRUE

  Binaries will be installed
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/e1071_1.6-7.zip'
Warning in install.packages :
  cannot open URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/e1071_1.6-7.zip': HTTP status was '404 Not Found'
Error in download.file(url, destfile, method, mode = "wb", ...) : 
  cannot open URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/e1071_1.6-7.zip'
Warning in install.packages :
  download of package ‘e1071’ failed

我需要做什么才能安装这个包？

Answer 1

看起来你被e1071包的CRAN更新卡住了。当您的R会话询问e1071的当前版本时，它报告(并缓存)版本1.6-7；然而，在版本1.6-8被上传到CRAN之后不久。因此，R会话尝试下载1.6-7，但失败了，因为当时只有1.6-8可用。

重新启动R应该会清除本地软件包列表缓存，并让您上路。