IBM Watson Studio R环境Notebook无法安装CRAN包viridis、Hmisc

Hey there, let's work through this frustrating package installation issue you're hitting in IBM Watson Studio's R environment—both Hmisc and viridis failing to install is a common pain point with a few straightforward fixes to try out.

Here are the most reliable solutions, ordered from simplest to more targeted:

• Use a user-writable library path
  Watson Studio restricts modifications to the global R package library, so installing packages to a user-specific folder often resolves permission errors. First, set up a local library directory:

  # Create a user library folder if it doesn't exist
  dir.create(path = "~/R/library", recursive = TRUE, showWarnings = FALSE)
  # Add this folder to your R library paths
  .libPaths("~/R/library")
  

  Now try installing the packages with dependency support (this ensures all required supporting packages are pulled in):

  install.packages(c("Hmisc", "viridis"), dependencies = TRUE)
  

• Specify a stable CRAN mirror
  Connectivity issues with default CRAN mirrors can break installations. Explicitly use a reliable mirror like Cloudflare's:

  chooseCRANmirror(graphics = FALSE, ind = 1)
  install.packages(c("Hmisc", "viridis"), dependencies = TRUE, lib = "~/R/library")
  

• Install critical dependencies separately
  Hmisc relies on several core packages (like survival, Formula, and lattice) that might fail to install silently. Install these first to rule out dependency bottlenecks:

  install.packages(c("survival", "Formula", "lattice", "ggplot2"), dependencies = TRUE, lib = "~/R/library")
  

  Once these are installed, retry installing Hmisc and viridis.

• Check R version compatibility
  Outdated R versions can cause compatibility issues with newer packages. Run this to check your current R version:

  sessionInfo()
  

  If your version is older than the minimum required by Hmisc or viridis, create a new notebook in Watson Studio using a newer R environment (you can select this during notebook setup).

• Fallback: Install from GitHub
  If CRAN installs still fail, use devtools to pull the latest versions directly from GitHub:

  # First install devtools
  install.packages("devtools", lib = "~/R/library")
  library(devtools, lib.loc = "~/R/library")
  # Install Hmisc and viridis from GitHub
  install_github("harrelfe/Hmisc")
  install_github("sjmgarnier/viridis")
  

Give these steps a try in order—most users fix the issue with the first two steps. If you hit a specific error message during any step, feel free to share it and we can troubleshoot further!

内容的提问来源于stack exchange，提问作者Sumit Goyal