[eml-dev] [Bug 3488] - datum requested in GeographicCoverageType

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=3488


mob at icess.ucsb.edu changed:

           What    |Removed                     |Added
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  BugsThisDependsOn|3502                        |




------- Comment #4 from mob at icess.ucsb.edu  2008-10-13 16:02 -------
I followed up on the issue of datums with a couple of geographers. The
conclusion is that the current geographicCoverage/boundingCoordinates tree is
adequate for its intended use. The request for a datum to be associated with
locations of datasets is actually part of a larger issue that cannot be
addressed in this part of EML - namely the integration of highly detailed
spatial descriptions and the data that was collected there. Values of lat and
lon that have been put into west|east|north|south elements may have been taken
from the context of a projection system, but the description of that system
does not belong under geographicCoverage.

The documentation for geographicCoverage should be updated before this bug is
closed.
1. to state its intended use - that it is meant for general, not accurate
mapping, and that information about mapping projections is covered by EML in
the spatialReference schema.
2. the datum for lats and lons are implied -- ie, the equator and the prime
meridian

 See bug #1019 for a comment on vertical datum.