Installing R-4.2.0

Procedure

1. Download the R language source package.

   cd /path/to/WGCNA
   wget https://cran.r-project.org/src/base/R-4/R-4.2.0.tar.gz

2. Decompress the installation package and go to the directory generated after the decompression.

   tar xvf R-4.2.0.tar.gz
   cd R-4.2.0

3. Install the dependencies.

   yum install libXt-devel libX11-devel readline-devel

4. Perform the compilation.

   ./configure --prefix=/path/to/WGCNA/R_install
   make
   make install

5. Load the environment variables.

   export PATH=/path/to/WGCNA/R_install/bin:$PATH
   export LB_LIBRARY_PATH=/path/to/WGCNA/R_install/lib/R/lib:$ LB_LIBRARY_PATH

6. (Optional) If the network speed is slow, add a mirrored source of the R language.
   1. Create an ~/.Rprofile file.

      vi ~/.Rprofile

   2. Press i to enter the insert mode and add the following content:

      options("repos"= c(CRAN="http://mirrors.tuna.tsinghua.edu.cn/CRAN/"))
      options(BioC_mirror="http://mirrors.tuna.tsinghua.edu.cn/bioconductor/")

   3. Press Esc, type :wq!, and press Enter to save the file and exit.