Hi Jeff and Russ, Just wanted to clarify what appears to be some version number confusion: - Jeff is using the netCDF-Java library (stable version is 4.3.21) - Russ is talking about the netCDF-C library (stable is 4.3.2). Hope that helps, Ethan Jeff Johnson wrote: > Jeff, > > > Thanks for the additional info. I will be using release 4.3.21 (or later) > > regardless of what file format we ultimately end up using. You mentioned > > that 4.3.2 should improve the default chunking, but the results I sent were > > using newer than that release already, so it sounds like I shouldn't expect > > any improvements on the NC4 files size at this point, correct? > > The improvement that netCDF C version 4.3.2 made was to change the default > chunk size for 1-dimensional record variables to DEFAULT_CHUNK_SIZE bytes, > where DEFAULT_CHUNK_SIZE is a configure-time constant with default value > 4194304. I'm surprised that using different chunk sizes made no difference > in the file size, so I may try to duplicate your results to understand how > that happened. > > --Russ Ticket Details =================== Ticket ID: BNA-191717 Department: Support netCDF Priority: Normal Status: Open
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