HDF-EOS Reference Center

• What are HDF and HDF-EOS?
• What versions of HDF and HDF-EOS are available and how are they different?
• Why are HDF4 and HDF5 not compatible?
• Can I convert HDF4 data to HDF5 (and vice versa)?
• Can I convert HDF-EOS2.x data to HDF-EOS5.x (and vice versa)?
• Why did NASA Choose HDF-EOS as the format for data products from the Earth Observing System (EOS) instruments?
• What is the Earth Observing System?

Quick Links

HDF-EOS			HDF
Online Overviews and Tutorials • Introduction to HDF-EOS (2000)   • Overview of HDF-EOS (9/24/1997) • An HDF and HDF-EOS Tutorial for Beginners: EOSDIS Users and Small Data Providers   • EOS Data Gateway Tutorial			Online Overviews and Tutorials • What is HDF?   • Introduction to HDF5 (5/31/2000)   • HDF5 Tutorial   • HDF4 Tutorial   • HDF5 Abstract Data Model (9/9/1999)   • HDF5 High Level Application Programming Interfaces (APIs) Tutorial
User Guides • HDF-EOS Primer (March 2001) [PDF  414 KB] • HDF-EOS Interface Based on HDF5 - Volume 1: Overview and Examples (May 2004) [PDF  2.9 MB] • HDF-EOS Interface Based on HDF5 - Volume 2: Function Reference Guide (May 2004) [PDF  809 KB] • HDF-EOS (based on HDF4) Library User's Guide for the ECS Project - Volume 1: Overview and Examples (May 2004) [PDF  1.1 MB] • HDF-EOS (based on HDF4) Library User's Guide for the ECS Project - Volume 2:Function Reference Guide (October 2003) [PDF  550 KB]			User Guides • Introduction to HDF5   • A User's Guide for HDF5   • User's Guide for HDF4.1r5 (Nov., 2001)   [PDF  1.95 MB]  [PS 22.3 MB] • HDF5: API Specification Reference Manual   • HDF4.1r5 Reference Manual   [PDF 886 KB]  [PS 8.71 MB] • HDF5 Application Developer's Guide   • HDF4.1r5 Specification and Developer's Guide   [PDF 908 KB]  [PS 8.12 MB] • Fortran90 and C++ APIs to HDF5   • Parallel HDF5 Design and Example   • HDF5 Glossary
XML-related • v1.0   - HDF-EOS 5 XML DTD v1.0 • v1.1 (Feb. 11, 2004)   - HDF-EOS 5 XML schema v1.1   - Schema for Granule Metadata of the Earth Observing System v1.1   - Schema for Collection Metadata of the Earth Observing System v1.1 • v1.2 (Aug. 9, 2004)   - Schema for Granule Metadata of the Earth Observing System v1.2 (includes granule valids)   - Schema for Collection Metadata of the Earth Observing System v1.2 (includes collection valids)   - Schema for Granule Valids of the Earth Observing System   - Schema for Collection Valids of the Earth Observing System			XML-related • The HDF5 DTD referencermation Page   • The XML DTD for HDF5: Design Notes   • DTD for NCSA Hierarchical Data Format, Version 5.1.4 (revised)   • NCSA HDF5 XML Overview   • Some Suggested Use Cases for XML with HDF-5
Frequently Asked Questions (FAQ) • NASA's HDF-EOS FAQ			Frequently Asked Questions (FAQ) • National Center for Supercomputing Applications' (NCSA's) HDF FAQ
Data Ordering Systems • EOS Data Gateway   • Global Change Master Directory (GCMD)