Talk:Coordinate Reference Systems and Positioning

Julie,

I am willing to contribute. However, at the moment TC 211 is in the process of revising ISO 19111, based on the work done in OGC. I am on the Editing Committee, which has just completed a two-day meeting going through all the comments received. This has led to some (not many) changes in the model (minor change really) and in terminology. I think the cookbook should reflect these changes, in order to be up-to-date. Some of the changes to the document taken off-line affect some of the explanatory text. I consider this explanatory text a prime candidate to include in this cookbook.

Regards, Roel Nicolai Shell International co-chair OGC CRS Working Group member EPSG Geodesy WG

Roel,

Thank you for your willingness to participate. I want the chapter to be consistent with ISO 19111 concepts and terminology, wherever possible. The purpose of the chapter is to provide high level information for a basic understanding of global coordinate reference systems (e.g., WGS 84, ITRFxx/GRS80) and case studies from different regions and countries of the world about the challenges of tying their datums to global coordinate reference systems. I think that such a chapter would be of benefit to developing countries or regions who are updating their national datums to tie into WGS 84 or ITRFxx/GRS 80.

Regards, Julie

Julie,

As said we (Editing Committtee) are in the process of editing the original OGC document, which contained descriptions mainly from my hand. Roger Lott and I are now editing the texts after which they need to be offered to the EC again. This means I would like to hang on until these texts are considered (reasonably) final.

It is not quite clear to me what you mean by "case studies". Do you mean some examples to show how you actually define such a coordinate reference system and how you transform coordinates from one system to e.g. WGS 84 or ITRF xx?

Regards, Roel [Februari 8, 2005]