Return path to the IDEEA extra-data directory
Arguments
- subdir
character, the name or path to the sub-directory in the IDEEA-extra folder. File name will also be accepted. The path must be relative to the IDEEA external folder.
- filename
character, the name of the file in the IDEEA-extra folder or subfolder if subdir is provided.
- check
logical, if TRUE, the function will report error if the directory or file doesn't exist.