Re: quantity database

Steve et al,
 
The quantity database and coordinate system database sound like
good ideas.
 
There should probably be system default values that users can
override.  Perhaps discipline-specific databases that can be
merged in multi-discipline applications.
 
There should be no problem putting it into the core VisAD package,
possibly with discipline-specific databases in discipline-specific
subpackages.
 
There should probably be some way for applications to ask the
user to resolve questions like whether "wnd_spd" is wind speed.
 
This sounds like the kind of design that ultimately must be
measured by the way it works in real applications.  Of course,
this is true of much of the VisAD design, including the parts that
have been through a half-dozen design reviews and are already
implemented.  The real test will be applications.
 
It will be interesting to see a design for a quantity database.
This would be a good time for anyone with thoughts about this
to offer them, so that Steve can factor them into a design.
 
Cheers,
Bill
 
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
whibbard@xxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html