Bill,
>Date: Wed, 15 Apr 1998 10:48 CST
>From: "William L. Hibbard" <WHIBBARD@xxxxxxxxxxxxx>
>To: visad-list@xxxxxxxxxxxxx
>Subject: Re: quantity database
In the above message, you wrote:
> OK, I'm starting to get the picture. One thing to be careful
> about: many applications will need to create lots of similar
> RealTypes. For example, some weather models generate densities
> for lots of different frozen states of water (e.g., pellets,
> grappel, sleet, big hail, medium hail, little hail - I've
> probably got the details wrong here, but do know that some
> models generate about 20 of these things) and need each one
> to be a different RealType to support visualizing correlations
> between densities of these different states.
I think this could be accommodated by a standard entry like the
following:
"mass density" -> RealType("mass density", "kg/m^3", FloatSet(...))
together with some meteorological-specific entries like the following:
"hail density" -> RealType("hail density", <some unit>, FloatSet(...))
"rain density" -> RealType("rain density", <some unit>, FloatSet(...))
...
> RealTypes are sort of like variable names when you're doing
> mathematics. You end up with so many that you need to start
> using subscripts and greek letters (hmmm, sounds like Unicode).
Sounds like we need a supreme dictator to bring order to this chaos. I
volunteer! :-) :-) :-)
Whether I succeed or go crazy first is problematical. :-)
--------
Steve Emmerson <http://www.unidata.ucar.edu>
