20000712: a [DODS] question

Hi Bill, Mike,

The DODS project is very interested in VisAD having the capability to
read DODS data.  We don't know of any groups working on this and,
currently, we don't have the resources to allocate to the effort.  

The approach we have discussed involves developing a new version of
the Unidata netCDF Java library that uses the DODS Java API when
called with a URL instead of a local filename.  Since VisAD already
uses the Unidata netCDF Java library, the new version could be used
without change to VisAD.  This approach is similar to the current C
version of the DODS netCDF client library which is the Unidata netCDF
library reworked to use the DODS C++ API when called with a URL
instead of a local filename.

The DODS Java API is available via anonymous CVS and will be on our
release site soon.  If anyone decides to work on this, please let us
know.  We will keep you informed of our efforts.

DODS User Support

Bill Hibbard writes:
 > Hi Mike,
 > > Does anyone know if someone is working on providing DODS data
 > > reading capability for VisAD?
 > > http://www.unidata.ucar.edu/packages/dods/index.html
 > We discussed this among the folks at SSEC and Unidata.  It
 > is a question of how similar the Java APIs for DODS and netCDF
 > are.  I think someone said the C APIs are identical, but that
 > this is not true for their Java APIs.  At any rate, the trick
 > would be to exploit the existing netCDF adapter for VisAD to
 > access DODS servers.
 > Perhaps one of the experts from Unidata can comment.
 > VisAD does have a capability to connect to McIDAS ADDE servers,
 > which are in some ways similar to DODS servers.  ADDE servers
 > allow VisAD to retrieve sub-sections of large images, and
 > generally subsets of other large data sets.
 > A similar VisAD capability for connecting to DODS servers would
 > be very valuable.
 > Cheers,
 > Bill
 > ----------------------------------------------------------
 > Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
 > hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
 > http://www.ssec.wisc.edu/~billh/vis.html

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