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John- I attempt a response, but I am anything but an expert in CRSs. CRS handling in WCS (which is based on GML 3.1 currently) is based on both identification (via URIs) and explicit indication. For the latter, a transformation can be indicated as part of a coverage's spatiotemporal domain definition, see Table 13 of WCS 1.1.2 (OGC 07-067r5). A transformation provides georeferencing coordinate transformation for unrectified coverage according to CC_CoordinateOperation, see ISO 19111^ ...in cases when the coverage is not given by a GridCRS - see WCS doc for details. I would like to think that such a transformation can do the trick for your cases as well, but as said I'm not the expert in this. Hope it helps, though, Peter John Caron wrote:
Hi Ron, Peter, et al: I think what follows is the same issue that Aaron brings up, or at least a small part of it. Our data typically uses CRS that are described by parameterized projection functions. eg, Lambert Conformal, with parameters lat/lon origin and two standard parallels. Thus there are an infinite number of possible CRS. Is there a way to map that into an EPSG code and/or form a URN? apologies if this is obvious.
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