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HDF5 Documentation

This document provides an overview of the HDF5 documentation, including resources for data users, application developers, library and driver developers, and users of non-C interfaces. Feedback and user input are encouraged to improve the documentation.

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HDF5 Documentation

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  1. HDF5 Documentation An overview of the HDF5 document set Frank Baker Technical Writer The HDF Group (217) 244-7223 fbaker@hdfgroup.org HDF and HDF-EOS Workshop X, Landover, MD

  2. Objectives • To make sure people are aware of various elements of HDF documentation, particularly HDF5 • To encourage feedback • How can the docs better serve you? • Let us know when you see errors.help@hdfgroup.org • We’ll come back to this. HDF and HDF-EOS Workshop X, Landover, MD

  3. HDF Documentation • HDF4 • C Library APIs and Fortran wrappers • Tools -- Data management and viewing • HDF5 • C Library APIs and High-level APIs • Fortran, C++ and Java wrappers and subroutines • Tools -- Data management and viewing Software configuration, build and install • HDF4 to HDF5 Conversion Library • HDF Java products • HDFview HDF and HDF-EOS Workshop X, Landover, MD

  4. HDF5 Documentation for All Users Users with all types of needs can find relevant information: • Data users • Application Developers • Library and driver developers Tools & Applications HDF I/O Library Files HDF and HDF-EOS Workshop X, Landover, MD

  5. HDF5 Data Users To examine data and browse HDF5 files: • HDF5 Tools • Command-line utilities • Browsers • HDFview offers limited editing features • Glossary Tools & Applications HDF I/O Library Files HDF and HDF-EOS Workshop X, Landover, MD

  6. HDF5 Application Developers Writing applications for your own data and for large projects: • HDF5 Tutorials • Introduction to HDF5 • HDF5 User’s Guide • HDF5 Reference Manual • HDF5 Tools • Example programs and HDF5 source code • FAQs • Glossary Tools & Applications HDF I/O Library Files HDF and HDF-EOS Workshop X, Landover, MD

  7. HDF5 Application Developers (2) As projects progress, programs endure, and applications become more complex: • HDF5 Application Developer’s Guide • Software Changes from Release to Release • HDF5 File Format Specification Tools & Applications HDF I/O Library Files HDF and HDF-EOS Workshop X, Landover, MD

  8. HDF5 Library and I/O Driver Developers Developing I/O drivers and working inside the HDF5 Library: • HDF5 Technical Notes for Library and Driver Developers Tools & Applications HDF I/O Library Files HDF and HDF-EOS Workshop X, Landover, MD

  9. Non-C Interfaces to HDF5 HDF5 Library is written in C. But Fortran, C++, Java interfaces are also available. (And C# is on the way.) Where would one find that documentation? HDF and HDF-EOS Workshop X, Landover, MD

  10. Fortran, C++ and Java Interfaces All linked from index page: • Under “HDF5 and Foreign Languages” • http://hdfgroup.org/HDF5/doc/ Fortran • Embedded with C APIs in HDF5 Reference Manual • http://hdfgroup.org/HDF5/doc/RM/ C++ • Separate reference manual http://hdfgroup.org/HDF5/doc/cpplus_RM/index.html Java • Separate subsite • http://hdfgroup.org/hdf-java-html/ HDF and HDF-EOS Workshop X, Landover, MD

  11. Additional HDF5 Documentation, Features • Pre-release snapshots • Routinely-provided snapshots at doc_dev_snapshot/The current state of a development or release branchhttp://hdfgroup.com/HDF5/doc_dev_snapshot/ • 1.8 pre-release series, alphas and betashttp://hdfgroup.org/HDF5/doc_1.8pre/ • Requests for Comment (RFCs), generally with substantial design material User input is critical! Participation leads to involvement! Let us know if you’re interested! HDF and HDF-EOS Workshop X, Landover, MD

  12. A Walking Tour HDF and HDF-EOS Workshop X, Landover, MD

  13. Native and Distribution Formats • Generally HTML • HDF5 Reference Manual and HDF5 User’s Guide • Printable “book style” PDF versions generated at major releases • Core documents set designed to be served from a website or viewed from a local installation • All docs except HDF5 Tutorial • Tarball available for local or behind-the-firewall installation HDF and HDF-EOS Workshop X, Landover, MD

  14. Credit Where Credit Is Due Developers participate heavily in creating and maintaining the documentation • Core library developers routinely provide • Initial reference manual entries • Major chunks of text and examples for the user guides • RFCs, from which other documentation is often built • Entire ADGuide and TechNotes documents • Binh-Minh Ribler: C++ docs, with doxygen • Peter Cao: HDFview and other Java products, with Java Doc • And everybody reviews! HDF and HDF-EOS Workshop X, Landover, MD

  15. Your feedback matters! • Let us know when you find any problem • Errors • Incomplete information • Areas where more explanation (or the right, targeted explanation) would have helped you avoid a problem or otherwise saved you time • help@hdfgroup.org HDF and HDF-EOS Workshop X, Landover, MD

  16. Your feedback matters! • Beyond that… • Suggestions? • What gives you the most difficulty? • What is most helpful? • What’s missing? HDF and HDF-EOS Workshop X, Landover, MD

  17. The End This report is based upon work supported in part by a Cooperative Agreement with NASA under NASA NNG05GC60A. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Aeronautics and Space Administration. HDF and HDF-EOS Workshop X, Landover, MD

  18. Contact Information Frank Baker Senior Technical Writer The HDF Group 1901 South First Street Champaign, IL 61820 USA (217) 244-7223 fbaker@hdfgroup.org HDF and HDF-EOS Workshop X, Landover, MD

  19. URLs HDF5 Tools: hdfgroup.org/HDF5/doc/Tools.html HDF5 Docs Index: hdfgroup.org/HDF5/doc/<== Ties it all together. Pre-releases and Snapshots: hdfgroup.org/HDF5/doc_1.8pre/ hdfgroup.org/HDF5/doc_dev_snapshot/ RFCs: hdfgroup.org/RFC/ HDF5 Tutorial: hdfgroup.org/HDF5/Tutor/index.html Printable Documents: hdfgroup.org/HDF5/doc/PSandPDF/ Bug Reports and Enhancement Requests: help@hdfgroup.org FAQs: hdfgroup.org/HDF5-FAQ.html HDF and HDF-EOS Workshop X, Landover, MD

  20. And back to your feedback… • Beyond that… • Suggestions? • What gives you the most difficulty? • What is most helpful? • What’s missing? HDF and HDF-EOS Workshop X, Landover, MD

  21. index.html -- An Alternative Style HDF and HDF-EOS Workshop X, Landover, MD

  22. Slide Title HDF and HDF-EOS Workshop X, Landover, MD

  23. Slide Title HDF and HDF-EOS Workshop X, Landover, MD

  24. Apps: simulation, visualization, remote sensing… Examples: Thermonuclear simulations Product modeling Data mining tools Visualization tools Climate models UDM SAF NetCDF 4 IDL HDF-EOS appl-specificAPIs LANL LLNL, SNL Unidata COTS NASA HDF5 virtual file layer (I/O drivers) HDF5 serial & parallel I/O Split Files MPI I/O Custom Stdio Stream Storage ? Across the networkor to/from another application or library HDF5 format User-defined device Split metadata and raw data files File on parallel file system File Slide Title Common application-specificdata models HDF5 data model & API HDF and HDF-EOS Workshop X, Landover, MD

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