Re: [emergency] RE: Geo-GIS subcommittee call tomorrow.

[Jacob Westfall <jake@jpw.biz>]

> Also, there is the way outstanding issue regarding allowing alternative coordinate reference systems. For example, the OGC is working with the Chinese standards community to have a number of OGC standards translated into Chinese. They require that all CRS examples be in Xian80 and not WGS84. This is because Xian80 is the China legal CRS and must be supported in any China standard dealing with geo.
> 

Regarding the CRS issue, a first question would be whether there is a need to support accuracy of less than 1 meter?  Has precision surfaced as a problem for any users?  For the chinese example, what is the actually legal requirement?  How do they support interoperability with other countries for things like shipping and air traffic data?  Don't they have to support WGS84 for civil aviation and satellite navigation?

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jake@jpw.biz
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