Re: Mapping

Satellite navigation (i.e., earth locations of pixels) can be
documented in VisAD using either CoordinateSystems (i.e.,
defining transforms between RealTuple values (line, element)
and RealTuple values (latitude, longitude)) or Field domain
Sets (i.e., sets of pixel locations in (latitude, longitude)).
 
The HDF-EOS file reader in VisAD handles image navigation.
I am not sure about the netCDF file reader - maybe Steve can
comment.  There are also plans for a McIDAS area reader that
will handle image navigation.
 
Coastline and other map boundary data can be implemented (and
displayed) as Sets.  Specifically, Gridded2DSets with manifold
dimension 1, and UnionSets of such Sets.
 
The application you are describing has always been important
at SSEC and Unidata, and it will be a priority in VisAD
development.
 
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
 
"kill cross-platform Java by growing the polluted Java market"
   - from an internal Microsoft planning document