Construct filepath of any freesurfer file.
subject.filepath.any(
subjects_dir,
subject_id,
relative_path_parts,
hemi = NULL,
file_tag = "",
warn_if_nonexistent = FALSE
)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.
character string. The subject identifier.
vector of strings. The path to the file, e.g., c("surf", "lh.area").
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.
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.
logical. Whether to print a warning if the file does not exist or cannot be accessed. Defaults to FALSE.
string, the file path.