An HDF5 file is a container for storing a variety of scientific data, and the two primary HDF5 objects are groups and datasets.
Working with groups and group members (datasets for example) is similar in many ways to working with directories and files in UNIX. As with UNIX directories and files, objects in an HDF5 file are often described by giving their full (or absolute) path names.
/
signifies the root group./foo
signifies a member of the root group called foo.
/foo/zoo
signifies a member of the group foo, which in
turn is a member of the root group.