使用installR更新R时遇报错，求升级至R 3.4.4的解决方法

Hey there, let's break down what's happening here first: that error message tells you your current R version is older than 3.4.4, and the installr package you're trying to use was built specifically for R 3.4.4. Since older R versions can't run packages built for newer releases, installr won't work as intended right now.

Here are two solid approaches to fix this and get your R version updated:

Option 1: Manually Upgrade R to 3.4.4 (Most Reliable) #

Since installr isn't usable in your current setup, manual upgrade is the way to go. Follow these steps:

• Backup your installed packages first: You don't want to lose all your work! Run these commands in your current R session:

  # Save your current workspace (optional but helpful)
  save.image("my_workspace.RData")
  
  # Export a list of all installed packages
  write.csv(installed.packages()[, c("Package", "Version")], "my_packages.csv", row.names = FALSE)
  

• Download R 3.4.4: Head to the CRAN archives and grab the installer for your operating system:

  • For Windows: Look for the .exe file labeled "R-3.4.4-win.exe"
  • For macOS: Grab the .pkg file (note: macOS versions might have specific system requirements)
  • For Linux: You can either download the source tarball or use your system's package manager to install the 3.4.4 release (you may need to add a repository with older R versions)

• Install the new version: Close all open R/RStudio windows first. Run the installer, and choose to overwrite your existing R installation (this is the easiest option—you can keep old versions if you want, but overwriting simplifies things).

• Restore your packages: Open the newly installed R 3.4.4, then run:

  # Load your package list
  pkg_list <- read.csv("my_packages.csv")
  
  # Reinstall all packages
  install.packages(pkg_list$Package)
  

  If some packages fail to install (because they no longer support R 3.4.4), use devtools::install_version() to grab a compatible version of that package. For example:

  # Install devtools first if you don't have it
  install.packages("devtools")
  devtools::install_version("dplyr", version = "0.7.8") # A version compatible with R 3.4.4
  

Option 2: Install a Compatible Version of installr (If You Prefer Using the Package) #

If you really want to use installr for the upgrade, you need to install an older version of installr that works with your current R version first. Here's how:

• First, install the devtools package (if you don't already have it):

  install.packages("devtools")
  

• Then, install an older installr release that's compatible with your current R version. For example, version 0.20.0 of installr works with R versions as low as 3.1.0:

  devtools::install_version("installr", version = "0.20.0")
  

• Once that's installed, you can run installr::updateR() to upgrade to R 3.4.4 (or a newer version if you prefer).

Quick Notes #

• After upgrading R, if you use RStudio, restart it to make sure it recognizes the new R version.
• Avoid copying packages from your old R library to the new one—this can cause compatibility issues. Reinstalling is safer.

内容的提问来源于stack exchange，提问作者Angus