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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
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
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