Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Using visualization tools to access HDF data via OPeNDAP

789 views

Published on

This slide will demonstrate how to use visualization and analysis tools such as IDV and GrADS to access HDF data via OPeNDAP.

To see animation in some slides, please visit:

http://hdfeos.org/workshops/ws13/presentations/day1/jxl_opendap_tutorial.ppt

Published in: Technology
  • Be the first to comment

  • Be the first to like this

Using visualization tools to access HDF data via OPeNDAP

  1. 1. The HDF Group Using visualization tools to access HDF data via OPeNDAP Joe Lee and Kent Yang The HDF Group The 13th HDF and HDF-EOS Workshop November 3-5, 2009 November 3-5, 2009 HDF/HDF-EOS Workshop XIII 1 www.hdfgroup.org
  2. 2. HDF-OPeNDAP Tutorial Outline • Why OPeNDAP? • OPeNDAP Client Tools o Visualization and Analysis • OPeNDAP Servers • Viewing Data with Panoply November 3-5, 2009 HDF/HDF-EOS Workshop XIII 2 www.hdfgroup.org
  3. 3. Why So Difficult? • Getting and Listening to MP3 song o Yesterday - Beatles • Getting and Viewing HDF-EOS dataset o Yesterday’s Ozone - OMI November 3-5, 2009 HDF/HDF-EOS Workshop XIII 3 www.hdfgroup.org
  4. 4. Mirador – Data Access Made Simple November 3-5, 2009 HDF/HDF-EOS Workshop XIII 4 www.hdfgroup.org
  5. 5. Access HDF via FTP/HTTP Users Tool (IDL) All I want is x-region data but data is missing. Aura All I want is a dataset, not the entire file. OMI FTP Local HDF Files November 3-5, 2009 FTP / HTTP Clients FTP / HTTP Servers HDF/HDF-EOS Workshop XIII HDF Files 5 www.hdfgroup.org
  6. 6. Why MP3? Why OPeNDAP? • MP3 over CD • Pick one song, not album (Quick) • Listen now and Buy later (Right) • OPeNDAP over FTP/HTTP • Pick one dataset, not file (Quick) • View now and Download later (Right) • Benefit: Save Time and Resource! November 3-5, 2009 HDF/HDF-EOS Workshop XIII 6 www.hdfgroup.org
  7. 7. OPeNDAP Concept Typical Remote Access OPeNDAP client Visualization Visualization View Data tools (e.g. grads) (User) Tools Remote Data (HDF4/5) Local Data (HDF4/5) OPeNDAP FTP Server FTP Client DataTransfer Protocol (DAP) via Internet File Access (FTP) November 3-5, 2009 HDF/HDF-EOS Workshop XIII 7 www.hdfgroup.org
  8. 8. Access HDF via FTP/HTTP Aura Users HDF Tool OMI FTP/ HTTP Local HDF Files November 3-5, 2009 FTP / HTTP Clients FTP / HTTP Servers HDF/HDF-EOS Workshop XIII HDF Files 8 www.hdfgroup.org
  9. 9. Access HDF via OPeNDAP Aura Users OMI DAP OPeNDAP Client Tool November 3-5, 2009 OPeNDAP Servers HDF/HDF-EOS Workshop XIII HDF Files 9 www.hdfgroup.org
  10. 10. OPeNDAP – Why Not? November 3-5, 2009 HDF/HDF-EOS Workshop XIII 10 www.hdfgroup.org
  11. 11. How toHow to HDF via OPeNDAP Enjoy Enjoy MP3 MP3 HDF via OPeNDAP 1. Install MP3 player 1. Install OPeNDAP tool 2. Search web for MP3 2. Search web for data 3. Listen to your MP3 3. View data November 3-5, 2009 HDF/HDF-EOS Workshop XIII 11 www.hdfgroup.org
  12. 12. OPeNDAP Tools 1. 2. 3. 4. 5. 6. 7. 8. Panoply GrADS IDV IDL NCL ODC Ferret ncBrowse http://www.giss.nasa.gov/tools/panoply/ http://www.iges.org/grads/ http://www.unidata.ucar.edu/software/idv/ http://www.ittvis.com/ProductServices/IDL.aspx http://www.ncl.ucar.edu/ http://opendap.org/ODC/ http://ferret.wrc.noaa.gov/Ferret/ http://www.epic.noaa.gov/java/ncBrowse/ November 3-5, 2009 HDF/HDF-EOS Workshop XIII 12 www.hdfgroup.org
  13. 13. Install Panoply • http://www.giss.nasa.gov/tools/panoply/ • Java 5 Runtime Environment November 3-5, 2009 HDF/HDF-EOS Workshop XIII 13 www.hdfgroup.org
  14. 14. Search Web for Data • Open Web Browser • Search omi opendap (or Enter URL) • http://acdisc.gsfc.nasa.gov/opendap/ (http://www.hdfgroup.org/projects/opendap4/opendap4_demo.html) • (Click HDF-EOS5) • (Click Aura OMI Level 3) • Click OMTO3d.003 November 3-5, 2009 HDF/HDF-EOS Workshop XIII 14 www.hdfgroup.org
  15. 15. Search Web for OPeNDAP Data • Pick the Date • Select & Copy the DATA URL (Ctrl-C) November 3-5, 2009 HDF/HDF-EOS Workshop XIII 15 www.hdfgroup.org
  16. 16. View Data • • • • • November 3-5, 2009 Start Application Enter URL (Album) Pick Dataset (Track) Set Projection (Equalizer) Enter Lat / Lon (FF/REW) HDF/HDF-EOS Workshop XIII 16 www.hdfgroup.org
  17. 17. Examples and Demo Pages November 3-5, 2009 HDF/HDF-EOS Workshop XIII 17 www.hdfgroup.org
  18. 18. The HDF Group Thank You! • More Tools Examples: http://hdfeos.org/software/idv.php http://hdfeos.org/examples/using_grads.php • More Demo Servers and Data: http://hdfgroup.org/projects/opendap http://hdfgroup.org/projects/opendap4 November 3-5, 2009 HDF/HDF-EOS Workshop XIII 18 www.hdfgroup.org
  19. 19. Acknowledgements This work was supported by cooperative agreement number NNX06AC83A, NNX08AO77A and NNX06AG75A from the National Aeronautics and Space Administration (NASA). Any opinions, findings, 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. November 3-5, 2009 HDF/HDF-EOS Workshop XIII 19 www.hdfgroup.org
  20. 20. The HDF Group Questions/comments? HDF-EOS to MP3? Earth Music?? November 3-5, 2009 HDF/HDF-EOS Workshop XIII 20 www.hdfgroup.org

×