find the root directory of a file in r

To find the root directory of a file in R, you can use the normalizePath() function along with the option "/" to specify the root directory. Here's an example:

main.r
# define the file path
file_path <- "/home/user/documents/project/data/file.csv"

# extract the root directory
root_dir <- dirname(normalizePath(file_path, winslash="/"))

# print the result
print(root_dir)
207 chars
9 lines

In this example, the normalizePath() function takes in the file_path argument and converts it into an absolute path. The winslash argument is set to "/" to ensure compatibility with Unix and Windows operating systems.

The dirname() function is then used to extract the directory path of the file, and the result is stored in the root_dir variable.

Finally, the print() function displays the root directory path on the console.