>Date: Tue, 14 Apr 1998 10:46 CST
>From: "William L. Hibbard" <WHIBBARD@xxxxxxxxxxxxx>
>Subject: Re: quantity database
In the above message, you wrote:
> 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
Actually, support for discipline-specific quantities might be
unnecessary. There are far fewer "generic" quantities than there are
units for such quantities -- and we already support almost every unit in
a single package. By "generic" quantities I mean things like "speed"
as opposed to "wind speed" (which *is* discipline specific).
Do you think qualifiers like "wind" will be necessary? I'm not sure.
Instead, I think we'll need a way to map a user's "wind speed" variable
to the quantity "speed" (and its associated MathType, default Unit, and
default Set). I'll see what I can do to support such a mapping.
Steve Emmerson <http://www.unidata.ucar.edu>