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February 27 - 28, 2002
Updated Monday March 11, 2002
The first word of the "Presentation Title" section for each presenter is linked to the Powerpoint presentation they provided. These are best viewed with Internet Explorer 4 or higher, for they will simply display the Powerpoint presentation as if it was running on your computer. Netscape will either ask you where to download the file, or execute and display the Powerpoint presentation if your machine has Powerpoint installed, depending on how you have configured the Netscape browser. You can also download the free "Powerpoint Viewer" from Microsoft.
Tuesday February 26, 2002 - HDF & HDF-EOS Tutorials
| Time Length |
Name Organization |
Tutorial Title |
| Description | ||
| 9:00 3 hours |
• Mike Folk, Elena Pourmal - NCSA • Ray Milburn, Alex Muslimov, David Wynne - Emergent |
• HDF5 Hands-on • An HDF-EOS Version 5 Hands-on Tutorial |
| Session 1c - How to Program With HDF | ||
| 12:00 90 min |
Lunch |
| Time Length |
Name Organization |
Tutorial Title |
| Description | ||
| 1:30 3 hours |
• Robert McGrath - NCSA • Pedro Vicente - Space Research Software, Inc. • Matt Smith - UAH |
• H5 View Tutorial • Tutorial: HDF Explorer • UAH's HDF-EOS Web-based Subsetter |
| Session 2c - Tools for HDF | ||
Wednesday February 27, 2002
| Time Length |
Name Organization |
Presentation Title |
| Description | ||
| 9:00 45 min |
Dolly Perkins Acting Chief Information Officer/Assistant Director for Information Science, NASA/GSFC |
Invited Speaker |
| 9:45 30 min |
Richard Ullman NASA ESDIS Project |
Welcome to HDF Workshop V PowerPoint [208 KB] PDF [422 KB] |
| Hierarchical Data Format (HDF) is NASA's standard file format for EOS Standard Products. HDF-EOS defines a "profile" for use of HDF for specific remote sensing measurement types. The HDF-EOS types are Point, Swath, and Grid. HDF-EOS built with HDF4 is the standard for Terra, Aqua, SAGE III and SORCE standard data products. HDF-EOS5, built on HDF5 is the standard for Aura and ICESat. This presentation will provide a basic overview of the definition, purpose, and use of HDF-EOS. | ||
| 10:15 15 min |
Break | |
| 10:30 30 min |
Mike Folk NCSA |
HDF Update PowerPoint [355 KB] PDF [800 KB] |
| HDF Update - A brief description of HDF4 and HDF5, followed by an update on HDF4 and HDF5 activities over the past year, and future plans. Recent activities include release of the libraries and tools, development of an "HDF5 Lite" API, and tuning of HDF5 for high performance computing environments. | ||
| 11:00 30 min |
Larry Klein, Alex Muslimov, Cid Praderas, and David Wynne Emergent Information Technologies, Inc |
HDF-EOS Development - Current Status and Schedule PowerPoint [82 KB] PDF [42 KB] |
| We describe the HDF-EOS5 library and application tools, based on a new HDF5 library. HDF5 is a complete rewrite of the earlier HDF4 library with a new user interface. HDF-EOS5 is built to closely resemble the HDF-EOS2 library based on HDF4. New functions have been added to incorporate HDF5 features not contained in HDF4. The HDF-EOS5 library and tools are aimed at the EOS and other Earth Science data products and end users, who are developing and using remote sensing data. We describe HDF-EOS5 main data structures, Swath, Grid, and Point.We outline the programming model for the Swath, Grid, and Point application programming interfaces (APIs) and briefly list the main HDF5 features incorporated into the HDF-EOS5 library. Finally, we describe the capabilities of application tools provided with the library. | ||
| 11:30 90 min |
Lunch/Vendor Expo/Poster Session |
| Time Length |
Name Organization |
Presentation Title |
| Description | ||
| 1:00 45 min |
James Green Chief, Space Science Data Operations Office, NASA/GSFC |
Invited Speaker |
| 1:45 90 min |
Kirk Borne, Elaine Dobinson, Milton Halem, Terry Kucera, Steve Wharton |
Panel Discussion: Data Challenges of the Future: Evolving Services, Archive and Data Lifecycle |
| 3:15 15 min |
Break | |
| 3:30 30 min |
Cheryl Craig NCAR/HIRDLS Project |
HDF-EOS Aura File Format Guidelines PowerPoint [34 KB] PDF [27 KB] |
| Overview of Aura satellite and instruments, Changes since HDF-EOS Workshop IV, File Guidelines | ||
| 4:00 20 min |
Robert McGrath NCSA |
Transitioning from HDF4 to HDF5 PowerPoint [209 KB] PDF [80 KB] |
| HDF4 users who are interested in switching to HDF5 face the problem of what to do with legacy HDF4 data and software. NCSA has published a recommended mapping to show how HDF4 objects can be converted to HDF5. The h4toh5 utility implements this mapping and can convert an HDF4 file to a conceptually identical HDF5 file. A libh4toh5 will provide C calls to convert HDF4 objects. Limited experiments show that these default conversions are efficient and effective, but they may not be what is needed for all cases. | ||
| 4:20 20 min |
Elena Pourmal NCSA |
Results of HDF Performance Study PowerPoint [250 KB] PDF [90 KB] |
| Performance tests are being conducted to compare HDF4, netCDF, FITSIO, HDF5, and PHDF5 on a number of criteria for common file I/O operations such as write/read with datatype conversion, hyperslab subsetting, access to large data sets, access to large numbers of objects and tables access. | ||
| 4:40 20 min |
Elena Pourmal NCSA |
Parallel HDF PowerPoint [172 KB] PDF [111 KB] |
| Many scientists anticipate an increase in the need to process EOS data on high performance platforms, many of which will involve parallel computing and I/O. HDF5 is designed and implemented to take advantage of the power and features of such computing systems. This presentation will cover the basic concepts of parallel I/O with HDF, the kinds of environments on which parallel HDF5 has successfully been deployed, and performance results. | ||
| 5:00 30 min |
Paul Wagner JPL |
MLS Software using HDF PDF [80 KB] |
| We are building software for the MLS instrument that will fly on the AURA spacecraft. This software creates HDF and HDF-EOS formatted data products. I will present selected details about the different software levels, the types of products output by each level, and how we are implementing them in HDF4 and give some attention to the transition to HDF5. | ||
Thursday February 28, 2002
| Time Length |
Name Organization |
Presentation Title |
| Description | ||
| 8:45 45 min |
Mark Schoeberl Earth Science Directorate, Chief |
Invited Speaker |
| 9:30 30 min |
Kyle Miller, Brian Rheingans JPL/MISR Instrument Team |
Tools for MISR Standard Products PowerPoint [5.4 MB] PDF [2.4 MB] |
| MISR standard products employ an extension to the HDF-EOS Grid API called stacked block. There is very little tool support for reading stacked block geolocation information. Consequently, it is difficult for users to co-locate MISR data and other HDF-EOS data, even data from other Terra instruments. Brian Rheingans and Kyle demonstrate some tools that the MISR team has been working on which read MISR geolocation information and reproject MISR data to allow for easy manipulation by standard commercial tools. | ||
| 10:00 15 min |
Break | |
| 10:15 15 min |
Kam-Pui Lee and Peter Spence SAIC/CERES Data Management Team |
view_hdf PowerPoint [573 KB] PDF [581 KB] |
| view_hdf is a visualization and analysis tool for accessing data stored in HDF and HDF-EOS files. It is being developed by the CERES Data Management Team at NASA Langley Research Center and is distributed by the NASA Langley Atmospheric Sciences Data Center. This tool has added many new features since it was presented at previous HDF and HDF-EOS Workshops. Usage of view_hdf with CERES products will be demonstrated. | ||
| 10:30 15 min |
Nancy Ritchey NASA LaRC Atmospheric Sciences Data Center |
misr_view 4.0: A Tool for Visualizing MISR Data PowerPoint [2.9 MB] PDF [504 KB] |
| The Multi-angle Imaging SpectroRadiometer (MISR) instrument onboard the Terra spacecraft was designed to improve our understanding of interactions between radiant energy, clouds, aerosols, and the surface and to characterize certain physical properties of the atmosphere and surface. This unique instrument captures moderately high resolution global imagery of upwelling radiance in four spectral bands at each of nine widely spaced angles. misr_view was developed by the Visualization and Earth Science Applications Group of the Image Processing Applications and Development Section at NASA's Jet Propulsion Laboratory (JPL) for use with data products from MISR and the airborne instrument, AirMISR. It is a graphical user interface-driven display and analysis tool and it is based on Interactive Data Language (IDL). The software and User's Guide are available free of charge from JPL. The latest release, misr_view 4.0, contains many new features and enhancements and this presentation describes them. | ||
| 10:45 30 min |
James Johnson GSFC DAAC |
HDF-EOS Data Applications at the Goddard Space Flight Center DAAC PowerPoint [903 KB] PDF [990 KB] |
| The Goddard DAAC has been archiving and supporting data sets written in the HDF and HDF-EOS formats. Recently, the Goddard DAAC has been developing applications for users to access the data files written in HDF and HDF-EOS. This is an overview of those HDF-related activities at the Goddard DAAC. | ||
| Siri Jodha Singh Khalsa NSIDC DAAC (Track B presentation) |
Facilitating Access to EOS Data at the NSIDC DAAC PowerPoint [2.6 MB] PDF [1.8 MB] | |
| Overview of HDF-EOS-related tools available through the Nationial Snow and Ice Data Center (NSIDC) DAAC. | ||
| 11:15 30 min |
Matt Smith ITSC/UAH |
HDF Work at UAH: ESML - Earth Science Markup Language, HEW-UAH & HDF-EOS Web-based Subsetter PowerPoint [332 KB] PDF [450 KB] |
| HEW (HDF-EOS Web-based subsetter) can extract a subset of any grid or swath data file that is in HDF-EOS format. As a stand-alone subsetter, HEW uses a user-friendly web-based front-end to gather the user's subsetting criteria and then submits the subsetting job to the batch queue. The subsetter engine (back-end) can also be used separately by substituting a site-specific front-end in place off HEW's web-based interace. An update of HEW will be presented and demonstrated. The Earth Science Markup Language (ESML) is being developed at ITSC as a NASA Earth Science Technology Office prototype. The primary goal of the ESML project is to enable independently developed applications and services to effectively utilize distributed heterogenous data products. Other HDF-EOS work at UAH's Information Technology and Systems Center will also be presented - including the Algorithm Development and Mining (ADaM) system and the Subsetter/Format Converter (SFC). | ||
| 11:45 90 min |
Lunch/Vendor Expo/Poster Session |
| Time Length |
Name Organization |
Presentation Title | |
| Description | |||
| 1:15 90 min |
Richard Ullman, Robert McGrath, Larry Klein | Ask the experts discussion PowerPoint [51 KB] PDF [150 KB] | |
| Open discussion about HDF and HDF-EOS Future Directions | |||
| 2:45 15 min |
Break | ||
| 3:00 30 min. |
Linda Hunt RSI, Software Development |
IDL Support for HDF4 and HDF5 PowerPoint [200 KB] PDF [73 KB] | |
| Research Systems is committed to supporting the HDF community and has recently updated its set of HDF4 routines. IDL HDF5 routines are currently under development and an early version of routines to read and query HDF5 files should be available by the time of the workshop. This presentation will quickly cover existing IDL HDF4 routines with more extensive coverage of recent additions and updates. The proposed initial relaease of IDL HDF5 and plans for future work will also be discussed. | |||
| 3:30 30 min |
Christopher Lawton, Robert Comer MathWorks |
MATLAB Features for Working With HDF and HDF-EOS Data PowerPoint [48 KB] PDF [44 KB] | |
| MATLAB, the core of the family of technical computing products from MathWorks, Inc, has included full support for the Hierarchical Data Format (HDF) since 1998. Since 1999, MATLAB has also supported HDF-EOS, the extension to HDF developed in support of NASA's Earth Observing System (EOS). MATLAB is both an interactive tool and a high-level programming language. This presentation included a demonstration of some of the MATLAB features. | |||
| 4:00 30 min. |
Larry Klein, Ray Milburn, Abe Taaheri Emergent Information Technologies, Inc. |
Generalized Conversion of HDF-EOS Products to GIS-Compatible Formats PowerPoint [2.4 MB] PDF [807 KB] | |
| We describe a tool developed for generalized conversion of HDF-EOS data to GIS-compatible formats. The tool provides reprojection, resampling, subsetting, and stitching capabilities. Output file options are GeoTIFF, native binary, and HDF-EOS Grid formats. The tool is operable on Sun and SGI platforms, and is accessible by command line and GUI interfaces. Initial testing has been performed on an variety of MODIS, ASTER, MISR, and Digital Elevation Model products. | |||
| 4:30 30 min. |
George McCabe NASA GSFC |
The LEISA Atmospheric Corrector (LAC) on Earth Observer 1 (EO1) PowerPoint [8.4 MB] PDF [3.3 MB] | |
| The LEISA Atmospheric Corrector (LAC) on Earth Observer 1 (EO1) is currently flying in formation with LandSat7 recording spectral images stored in HDF format. The LAC instrument team processes Level0 to Level1R radiometrically corrected data in HDF format and will produce georectified data products in HDF-EOS format. The LAC is a wedge filter-type sensor, the first of its kind in space flight, and presents some unique processing issues in producing data products. Regarding the concerns of the user verifying instrument performance as well as the science user, we address HDF formatting of metadata, maintaining integrity of data values, traceable/reversible modifications, efficient extraction of subsets, and data fusion issues. | |||