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| HDF5 Last Updated on 2026-07-28 The HDF5 Field Guide

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Core Library

- Attributes (H5A)
  HDF5 attribute is a small metadata object describing the nature and/or intended usage of a primary data object.
- Datasets (H5D)
  Manage HDF5 datasets, including the transfer of data between memory and disk and the description of dataset properties.
- Dataspaces (H5S)
  HDF5 dataspaces describe the shape of datasets in memory or in HDF5 files.
- Datatypes (H5T)
  HDF5 datatypes describe the element type of HDF5 datasets and attributes.
- Error Handling (H5E)
  HDF5 library error reporting.
- Event Set (H5ES)
  HDF5 event set life cycle used with HDF5 VOL connectors that enable the asynchronous feature in HDF5.
- Files (H5F)
  Manage HDF5 files.
- Filters (H5Z)
  Manage HDF5 user-defined filters
- Groups (H5G)
  Manage HDF5 groups.
- Identifiers (H5I)
  Manage identifiers defined by the HDF5 library.
- Library General (H5)
  Manage the life cycle of HDF5 library instances.
- Links (H5L)
  Manage HDF5 links and link types.
- Objects (H5O)
  Manage HDF5 objects (groups, datasets, datatype objects).
- Property Lists (H5P)
  HDF5 property lists are the main vehicle to configure the behavior of HDF5 API functions.
- Dynamically-loaded Plugins (H5PL)
  Manage the loading behavior of HDF5 plugins.
- References (H5R)
  Manage HDF5 references (HDF5 objects, attributes, and selections on datasets a.k.a. dataset regions).
- VOL Connector (H5VL)
  Manage HDF5 VOL connector plugins.