The HDF Group Using visualization tools to access

The HDF Group Using visualization tools to access HDF data via OPe. NDAP Joe Lee and Kent Yang The HDF Group The 13 th HDF and HDF-EOS Workshop November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 1 www. hdfgroup. org

HDF-OPe. NDAP Tutorial Outline • Why OPe. NDAP? • OPe. NDAP Client Tools o Visualization and Analysis • OPe. NDAP Servers • Viewing Data with Panoply November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 2 www. hdfgroup. org

Why So Difficult? • Getting and Listening to MP 3 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

Mirador – Data Access Made Simple November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 4 www. hdfgroup. org

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 HDF Files FTP / HTTP Servers HDF/HDF-EOS Workshop XIII 5 www. hdfgroup. org

Why OPe. NDAP? Why MP 3? • MP 3 over CD • Pick one song, not album (Quick) • Listen now and Buy later (Right) • OPe. NDAP 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

OPe. NDAP Concept Typical Remote Access OPe. NDAP client Visualization View Data tools (e. g. grads) (User) Tools Remote Data (HDF 4/5) Local Data (HDF 4/5) OPe. NDAP FTP Server FTP Client Data. Transfer Protocol (DAP) via Internet File Access (FTP) November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 7 www. hdfgroup. org

Access HDF via FTP/HTTP Aura Users HDF Tool OMI FTP/ HTTP Local HDF Files November 3 -5, 2009 FTP / HTTP Clients HDF Files FTP / HTTP Servers HDF/HDF-EOS Workshop XIII 8 www. hdfgroup. org

Access HDF via OPe. NDAP Aura Users OMI DAP OPe. NDAP Client Tool November 3 -5, 2009 HDF Files OPe. NDAP Servers HDF/HDF-EOS Workshop XIII 9 www. hdfgroup. org

OPe. NDAP – Why Not? November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 10 www. hdfgroup. org

How to HDF via OPe. NDAP Enjoy MP 3 HDF via OPe. NDAP 1. Install MP 3 player 1. Install OPe. NDAP tool 2. Search web for MP 3 2. Search web for data 3. Listen to your MP 3 3. View data November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 11 www. hdfgroup. org

OPe. NDAP Tools 1. 2. 3. 4. 5. 6. 7. 8. Panoply Gr. ADS IDV IDL NCL ODC Ferret nc. Browse http: //www. giss. nasa. gov/tools/panoply/ http: //www. iges. org/grads/ http: //www. unidata. ucar. edu/software/idv/ http: //www. ittvis. com/Product. Services/IDL. aspx http: //www. ncl. ucar. edu/ http: //opendap. org/ODC/ http: //ferret. wrc. noaa. gov/Ferret/ http: //www. epic. noaa. gov/java/nc. Browse/ November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 12 www. hdfgroup. org

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

Search Web for Data • Open Web Browser • Search omi opendap (or Enter URL) • http: //acdisc. gsfc. nasa. gov/opendap/ (http: //www. hdfgroup. org/projects/opendap 4_demo. html) • (Click HDF-EOS 5) • (Click Aura OMI Level 3) • Click OMTO 3 d. 003 November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 14 www. hdfgroup. org

Search Web for OPe. NDAP Data • Pick the Date • Select & Copy the DATA URL (Ctrl-C) November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 15 www. hdfgroup. org

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

Examples and Demo Pages November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 17 www. hdfgroup. org

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 4 November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 18 www. hdfgroup. org

Acknowledgements This work was supported by cooperative agreement number NNX 06 AC 83 A, NNX 08 AO 77 A and NNX 06 AG 75 A 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

The HDF Group Questions/comments? HDF-EOS to MP 3? Earth Music? ? November 3 -5, 2009 HDF/HDF-EOS Workshop XIII 20 www. hdfgroup. org