Accessing objects by location and name:
To work with an HDF5 object, an application needs the object's location identifier. An object's location identifier is returned to an application after the object is opened.
To open an object, an application uses a function with three parameters: the location identifier of an already opened object, a path from the already opened object to the object that will be opened, and a property list. The location identifier of an already opened object is its
loc_id. An already opened object might be a file or a group. The path from the already opened object to the object that will be opened is kept in the
name parameter. The path will be one or more links. For the rest of this discussion, we will assume that the default property list,
H5P_DEFAULT, is used.
See the HDF5 Reference Manual entries for the
H5Topen functions for more information on opening datasets, groups, objects, and datatypes.