subject.filepath.any: Construct filepath of any freesurfer file.
In neuroconductor/fsbrain: Managing and Visualizing Brain Surface Data

Construct filepath of any freesurfer file.

subject.filepath.any(
  subjects_dir,
  subject_id,
  relative_path_parts,
  hemi = NULL,
  file_tag = "",
  warn_if_nonexistent = FALSE
)

`subjects_dir`	character string. The FreeSurfer SUBJECTS_DIR, i.e., a directory containing the data for all your subjects, each in a subdir named after the subject identifier.
`subject_id`	character string. The subject identifier.
`relative_path_parts`	vector of strings. The path to the file, e.g., c("surf", "lh.area").
`hemi`	string, one of 'lh', 'rh', or NULL. Defaults to NULL. If a hemisphere name is given, it is added as a prefix to the last entry in relative_path_parts, separated by a dot.
`file_tag`	string. A one-word description of the file type that will show up in the error message to describe the file if it is missing. Leads to a better error message. Examples: 'morphometry' or 'label'. Only relevant if warn_if_nonexistent is TRUE. Defaults to the empty string.
`warn_if_nonexistent,`	logical. Whether to print a warning if the file does not exist or cannot be accessed. Defaults to FALSE.