hdf4/hdf5 [Fwd: Re: HDF4 support]

Wenli Yang yang at rattler-e.gsfc.nasa.gov
Mon May 7 10:44:02 MDT 2007


John,

For HDF4-based HDF-EOS, see the following for Java API:

http://hdfeos.org/workshops/ws10/abstracts/day2/HDF-EOS_Java_API.php

Wenli Yang
George Mason University

At 11:30 AM 5/7/2007, 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" <edavis at unidata.ucar.edu>
>>Date:    Wed, December 6, 2006 2:55 pm
>>To:      John.Relph at noaa.gov
>>Cc:      thredds at unidata.ucar.edu
>>-------------------------------------------------------------------------
>>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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