I know that you can download old packages and install them with
我知道你可以下载旧包并安装它们
R CMD INSTALL package-version.tar.gz
I wonder if you can tell install.packages() to install a specific version from a repository, saving you from having to locate the tar.gz first. I have neither found this option in the help entry for install.packages nor googling for it. If this option does not exist, is there any reason for that?. I can only think that not all repos have all versions so you are forced to find the version first and download it.
我想知道你是否可以告诉install.packages（）从存储库安装一个特定的版本，从而使你不必首先找到tar.gz。我既没有在install.packages的帮助条目中找到此选项，也没有使用Google搜索。如果此选项不存在，是否有任何理由？我只能认为并非所有的repos都有所有版本，所以你不得不首先找到该版本并下载它。
There is an equivalent question already in SO but the problem and answer is more about repository problems, so at the end they never answered this question directly.
SO中已经有一个等价的问题，但问题和答案更多的是关于存储库问题，所以最后他们从未直接回答过这个问题。
1 个解决方案
#1
11
install.packages() does not, but there is a function install_version() in the devtools package which can install a version other than the most recent one from a CRAN repository.
install.packages（）没有，但devtools包中有一个函数install_version（），它可以安装CRAN存储库中最新版本以外的版本。
#1
11
install.packages() does not, but there is a function install_version() in the devtools package which can install a version other than the most recent one from a CRAN repository.
install.packages（）没有，但devtools包中有一个函数install_version（），它可以安装CRAN存储库中最新版本以外的版本。