Sister dir path in R

In R, to get the sister directory path, you can use the dirname() function. The dirname() function returns the directory path of the file path supplied as argument. To get the sister directory path, you can apply dirname() to the current working directory path and then apply basename() to the result to get the name of the sister directory.

Here's an example:

# Set working directory
setwd("C:/Users/username/Documents/R/myproject/")
# Get sister directory path

sister_dir <- paste(dirname(getwd()), basename(dirname(getwd())-1), sep = "/")
# Print the sister directory path

sister_dir

Assuming that the working directory is "C:/Users/username/Documents/R/myproject/", dirname() will return "C:/Users/username/Documents/R/" and basename() will return "R". Hence, the full path of the sister directory will be "C:/Users/username/Documents/R/R".