John Caron wrote:
Ethan Davis wrote:
Collections of base types:
- Collection of point data: a set of data points distributed in space
and time (unconnected in x, y, z, t)
- Collection of profile data: What is the connectedness between
profiles?
[a] - the profiles are not connected (point collection of profiles?)
[b] - the profiles are all for the same location/station and
ordered in time (a time series collection of profiles?)
[c] - the profiles are from many stations but all for the same time
(station collection of profiles?)
- Collection of trajectory data: Same here. What is the connectedness
between trajectories?
At the moment, the only "collection types" that make generic sense to
me are: 1) the set of events occur at random points, and 2) the set of
events occur at some set of locations.
Case 1) you might call an "unconnected collection" or "point
collection" (not as good?)
I added labels to the sub-list of my "collection of profile data" item
above. I think your case 1 is the same as my [a].
Case 2) you might call a "station collection". note that it implies a
"time series".
And this is the same as my item [b].
All our profile data is stored as collection type [c] above (station
collection at a single time). As is our METAR data. So, I think [c] is a
collection type we'll see across the base types.
A fourth collection type I didn't mention earlier but may be important
to consider is the "point collection of time series" collection which is
a collection at many, possibly named, locations where each location has
a time series of <base type>.
Ethan
--
Ethan R. Davis Telephone: (303) 497-8155
Software Engineer Fax: (303) 497-8690
UCAR Unidata Program Center E-mail: edavis@xxxxxxxx
P.O. Box 3000
Boulder, CO 80307-3000 http://www.unidata.ucar.edu/
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