HDF and HDF-EOS Tools (1998)

HDF and HDF-EOS Tools (1998)



Source: http://hdfeos.org/workshops/ws02/presentations/schwenke/schwenke.ppt

Source: http://hdfeos.org/workshops/ws02/presentations/schwenke/schwenke.ppt



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HDF and HDF-EOS Tools (1998) HDF and HDF-EOS Tools (1998) Presentation Transcript

  • HDF and HDF-EOS Tools George Schwenke Raytheon STX schwenke@rattler.gsfc.nasa.gov HDF-EOS Workshop II
  • Many tools currently exist for visualization and manipulation of HDF files Development of tools useful for HDF-EOS has been slow... The limited availability of actual HDF-EOS data has been one significant factor delaying tools development... HDF-EOS Data S Sampler 1 HDF-EOS Workshop II
  • A Necessary Distinction: Utility - typically runs from the command line and performs a specific data manipulation function examples: make24 ristosds Convert Raster Image Sets to Scientific Data Sets hdfls List contents of an HDF file (tags and reference numbers) HDF-EOS Workshop II
  • Tool - a complete application performing significant data manipulation and processing functions examples: HDF The NCSA Java-based HDF Viewer (JHV) - A Java-based implementation of an HDF Viewer. DIAL (Data Information and Access Link) from ESDIS - browsing, plotting, subsampling and subsetting of HDF and HDF-EOS data. HDF Browser from Fortner Software - allows access to data stored in HDF formatted files Reference http://hdf.ncsa.uiuc.edu/tools.html HDF-EOS Workshop II
  • Three categories of HDF-EOS Tools ESDIS Project Tools Other “Government” Tools Commercial Tools HDF-EOS Workshop II
  • ESDIS Project Tools DIAL - Data and Information Access Link Capable of • searching • browsing • downloading • viewing • subsampling • subsetting HDF and HDF-EOS Data HDF-EOS Workshop II
  • ESDIS Project Tools EOSView (new version 3.0 released Aug 98) Demonstrated during 1st day of Workshop Many data searching, manipulation and display functions (like DIAL), doesn’t have the capability to act as a data server HDF-EOS Workshop II
  • “Government” Tools View_hdf (from LaRC) HDF only; uses IDL WebWinds from JPL plus a wealth of work for HDF from NCSA, including JHV HDF-EOS Workshop II
  • Government Tools (continued): HDF-EOS DataBlade (developed by ECOlogic) Extends capabilities of Informix Data Base to HDF-EOS data HDF-EOS Workshop II
  • Commercial Tools Noesys (Fortner Software LLC) HDF Explorer (Mind) HDF-EOS Workshop II
  • Commercial Tools ENVI/IDL - Environment for Visualizing Images (RSI) IDL 5.2 has full support for HDF-EOS; ENVI will follow MATLAB Version 5.3 supports HDF-EOS HDF-EOS Workshop II
  • Summary of response to the HDF-EOS Tools Survey 16 responses -- 5 gov; 4 edu; 7 com All but 1 are “developing HDF-EOS tools” Most “don’t know” when they’ll be ready... Tools to be developed… • Java JNI Interface • display tools • Java compatable ODBMS • ASCII to HDF-EOS • METADATA tools for granule level support • map/graphical overlay tools • browser/editor for sgi, linux • access and analysis HDF-EOS Workshop II
  • Summary Most utilities and tools currently exist for only HDF Development of HDF-EOS capable tools has been slow! ESDIS Project sponsorship helps, but can not be the only player The future volumes of data in HDF-EOS format will justify expense of HDF-EOS software for forwardlooking software developers HDF-EOS Workshop II