[THREDDS #IBA-176704]: Another quick question

Hi Herbert,

It turns out that a Zstandard filter is already available for HDF5 (which 
NetCDF-4 is built upon [1]). However, I don't think the libnetcdf tools (such 
as nccopy) can use compression other than zlib, even if the underlying libhdf 
has other filters installed. You might want to ask NetCDF support about that: 
address@hidden

As for HTTP compression, THREDDS just uses standard gzip, which is actually a 
feature of Tomcat, the servlet container. Zstandard doesn't look to be 
supported by major web servers or browsers yet.

Cheers,
Christian

[1] http://www.unidata.ucar.edu/blogs/developer/entry/netcdf_compression

Ticket Details
===================
Ticket ID: IBA-176704
Department: Support THREDDS
Priority: Normal
Status: Closed
===================
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