Hi Joel, Could you provide sample files for us? I will send you a separate email on how to upload your files. Out of my head I think it is probably due to the chunking size and the compression settings. I can tell you more when I can see the real files.
Thanks, Kent -----Original Message----- From: Hdf-forum [mailto:[email protected]] On Behalf Of Joel Gales Sent: Wednesday, April 02, 2014 8:55 AM To: [email protected] Cc: Bryan Franz; sean bailey Subject: [Hdf-forum] HDF5 filesize We have recently switchws our data format from HDF4 to HDF5 (via NETCDF4). The filesize has increased by nearly a factor of 5: HDF4: 170873864 S20070012007004.L3b_4D_ST93.main HDF5: 905223847 S20070012007004.L3b_4D_ST97.main Using compressions helps somewhat, the factor goes to 2, however is there a simple explanation why HDF5 files are significantly larger than HDF4 files when essentially storing the same information? ========================= Joel Gales Futuretech Corp. OBPG Code 616.0 Phone: (301) 286-1403 FAX: (301) 286-0268 Bin Globally Map Locally _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
