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Re: hdf4/hdf5 [Fwd: Re: HDF4 support]

The Webwinds project out of JPL (Lee Elson) had a pure Java HDF library. Have you had a look at that? If the library was adequate, what would it take to add it as a service? 

-Roy
On May 7, 2007, at 8:30 AM, John Caron wrote:


Hi Rob:
We are looking for funding (or another group) to add an HSF4/HDF- EOS reader to the CDM and THREDDS. The NCSA library is in C, but we require 100% Java, so we cant use it.
Any ideas from anyone on where we might find resources would be welcome. 
Rob Cermak wrote:

Hi,
I guess we also have a large supply of HDF4 files.   I would 2nd the
motion for HDF4 support in Thredds :)
NCSA seems to be a fully operational hdf4 and hdf5 library for java.
How much effort would it take to adapt this for use in THREDDS?
http://hdf.ncsa.uiuc.edu/hdf-java-html/build_src_unix.html
Rob
--------------------------- Original Message ---------------------------- 
Subject: Re: HDF4 support
From:    "Ethan Davis" <address@hidden>
Date:    Wed, December 6, 2006 2:55 pm
To:      address@hidden
Cc:      address@hidden
--------------------------------------------------------------------- ---- 
Hi John,
Yuan Ho wrote:

John Relph wrote:

I was wondering if anybody has HDF4 support working in THREDDS.

No, I think only HDF5.

The THREDDS Data Server only serves data that the netCDF-java library
can read. As Yuan said, it can't read HDF4 but can read HDF5 (though it isn't a full HDF5 implementation, so there are HDF5 files that it can't 
read).
However, if you are looking for OPeNDAP access, the OPeNDAP project
(opendap.org) does have an HDF4 server.
Ethan
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Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division 
Southwest Fisheries Science Center
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097

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