Hi, No it is generated by Panoply [0], however I can see the variable fields when I print the Dataset object. I just can’t see how to actually access them cleanly. I resorted to the following which is horrible, probably inconsistent in it’s operation across various HDF4 from Landsat 7 and just downright nasty
str(f.__dict__['StructMetadata.0']).split() This above gives me the StructMetadata.0 element of the dataset dictionary as a list. I can then navigate to the index within that list and grab the variable I require e.g. UpperLeftPointMtrs Do you have any better suggestions. I anticipate that this hack will come back to bite me pretty soon. Thank you very much for any information. lewis [0] http://www.giss.nasa.gov/tools/panoply/ Dr. Lewis John McGibbney PhD, B.Sc., MAGU Engineering Applications Software Engineer Level 2 Computer Science for Data Intensive Systems Group 398M Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena, California 91109-8099 Mail Stop : 158-256C Tel: (+1) (818)-393-7402 Cell: (+1) (626)-487-3476 Fax: (+1) (818)-393-1190 Email: [email protected] [cid:0C8358E3-2D72-49FC-9735-9A71DDE08CED] Dare Mighty Things From: "H. Joe Lee" <[email protected]<mailto:[email protected]>> Reply-To: HDF Users Discussion List <[email protected]<mailto:[email protected]>> Date: Thursday, December 4, 2014 at 7:09 AM To: HDF Users Discussion List <[email protected]<mailto:[email protected]>> Subject: Re: [Hdf-forum] Extracting Group Variables from Landsat 7 HDF-EOS Hi, Lewis! Is screen shot generated from ToolsUI (Netcdf-Java)? -- Save the Earth. Save Earth data in HDF-EOS. Save Big data in HDF. On Wed, Dec 3, 2014 at 4:40 PM, Mcgibbney, Lewis J (398M) <[email protected]<mailto:[email protected]>> wrote: Hi Folks, I am really struggling to extract certain Group variables from a HDF4 hdf-eos Landsat 7 file. I am using the netcdf4-python driver [0] in order to achieve this task. I’ve installed the chain of dependencies fine. The Group Variables which I cannot seem to access are included within the attached .png. E.g. Projection, UpperLeftPointMtrs, LowerRightMtrs and SphereCode. I can however view them when I read in the HDF4 file as follows f = Dataset(hdfFile) print f <output> … GROUP=GridStructure GROUP=GRID_1 GridName="Grid" XDim=8001 YDim=7271 UpperLeftPointMtrs=(310185.000000,4575015.000000) LowerRightMtrs=(550215.000000,4356885.000000) … </output> Can someone please advise me as how I can extract the Group Variables as I’ve explained above? Thank you very much in advance for any assistance. Best Lewis [0] http://unidata.github.io/netcdf4-python/ Dr. Lewis John McGibbney PhD, B.Sc., MAGU Engineering Applications Software Engineer Level 2 Computer Science for Data Intensive Systems Group 398M Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive Pasadena, California 91109-8099 Mail Stop : 158-256C Tel: (+1) (818)-393-7402<tel:%28%2B1%29%20%28818%29-393-7402> Cell: (+1) (626)-487-3476<tel:%28%2B1%29%20%28626%29-487-3476> Fax: (+1) (818)-393-1190<tel:%28%2B1%29%20%28818%29-393-1190> Email: [email protected]<mailto:[email protected]> [cid:0AFCAB22-5194-48A3-9912-0D7CDA76139D] Dare Mighty Things _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected]<mailto:[email protected]> http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org Twitter: https://twitter.com/hdf5
_______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org Twitter: https://twitter.com/hdf5
