RE: Notes from today's teleconference

["Carl Reed" <creed@opengeospatial.org>]

Any comments before I post to the EM TC GIS archives appreciated

 

Thanks

 

Carl

 

Rob, Gary, Hans, Carl, Rex

 

Discussion on the use of OASIS GML "where" profile and how to be used in NIEM. Adaptor would be the proper approach.

 

Discussion on linestring. Flat earth or geodesic. Flat earth as most events are over a small area. Question of use cases and a linestring. A number of use cases were identified (hurricane eye, tornado path, route, flow of hazardous waste in a river). Then a discussion on directionality. Application dependent.

 

Units of measure: Should be mandatory. Need to include some guidance along with some references. Guidance: Avoid multiple UoMs in the same payload. Should we enumerate our own list?

 

Is zero a valid distance/radius? No. Use a point geometry.

 

Polygons - are islands in? Yes. Need to clarify language in document about direction of coordinates on the exterior boundary and interior boundary.

 

Need to report this out of the SC and make it an official position of the TC and move forward. We need to do this in two weeks time.

 

Carl Reed, PhD
CTO and Executive Director Specification Program
OGC

 

The OGC: Helping the World to Communicate Geographically

 

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