在R 3.4.4版本安装swirl包时遇权限及未找到包错误求助

Hey Diego, let's tackle that permission denied error you're facing when installing swirl in R 3.4.4. This is a common Windows-specific issue tied to write access restrictions for R's default library folder, and we've got a few solid fixes to work through:

1. Run R/RStudio as Administrator #

Windows often blocks write access to certain user folders unless you elevate your permissions. Here's how to fix that quickly:

• Locate your R or RStudio shortcut (or the executable file itself).
• Right-click it and select Run as administrator.
• Once R loads, re-run the installation command:

  install.packages("swirl")
  

2. Install to a Custom Library Folder with Full Permissions #

If running as admin doesn't fit your workflow, create a personal library folder where you have unrestricted write access:

• First, make a new folder (e.g., Rlibs) in your Documents directory:

  dir.create("C:/Users/diego/Documents/R/Rlibs")
  

• Install swirl directly to this folder:

  install.packages("swirl", lib = "C:/Users/diego/Documents/R/Rlibs")
  

• To avoid specifying the folder path every time you load swirl, add this folder to R's default library paths:
  1. Run file.edit(Sys.getenv("R_ENVIRON_USER")) in R to open your user environment file.
  2. Add this line to the file:

     R_LIBS_USER="C:/Users/diego/Documents/R/Rlibs"
     

  3. Save the file and restart R. Now library(swirl) will load automatically.

3. Check and Adjust Folder Permissions #

Let's confirm your user account has write access to R's default library folder:

• Navigate to C:/Users/diego/Documents/R/win-library/3.4 in File Explorer.
• Right-click the folder, select Properties > Security tab.
• Find your user account (diego) in the permissions list and make sure the Write permission is enabled under "Allow".
• If it's not, click Edit to modify permissions, check the "Write" box, then click Apply and OK.
• Restart R and try installing swirl again.

4. Temporarily Disable Antivirus/Firewall (Last Resort) #

Occasionally, antivirus software or Windows Defender can block R from writing files to your library. If the above steps fail:

• Temporarily turn off your antivirus or firewall.
• Run install.packages("swirl") to install the package.
• Re-enable your security software once installation finishes.

Verifying the Fix #

After a successful install, run these commands to confirm everything works:

packageVersion("swirl")  # Should return the installed version number
library(swirl)           # Should load the package without errors

内容的提问来源于stack exchange，提问作者Diego Escobar