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#107: CF Data Model 1.7 -----------------------------+---------------------------------------------- Reporter: markh | Owner: [email protected] Type: task | Status: new Priority: medium | Milestone: Component: cf-conventions | Version: Resolution: | Keywords: -----------------------------+---------------------------------------------- Comment (by jonblower): Hi Jim, I think you are using a stronger definition of CRS than I am. I'm using the ISO definition, which basically says that a CRS needs a reference (datum), the direction away from this reference and the unit of measure (hence "depth below local sea level" is a fully-fledged CRS). I think you are referring to a fully geographic/geodetic CRS, which is clearly more precise of course (and more useful). (I think we will find that not all CRSs in CF are fully geographic/geodetic, for example a vertical CRS based on pressure. It's still useful though and it doesn't mean there is no CRS at all. Any coordinate without a CRS is pretty much useless.) The GeoAPI documentation is based on ISO and is instructive, as is an inspection of the subclasses (types) of CRS: http://www.geoapi.org/3.0/javadoc/org/opengis/referencing/crs/CoordinateReferenceSystem.html. (The GeoAPI list is not exhaustive of course.) Best wishes, Jon -- Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/107#comment:47> CF Metadata <http://cf-pcmdi.llnl.gov/> CF Metadata This message came from the CF Trac system. To unsubscribe, without unsubscribing to the regular cf-metadata list, send a message to "[email protected]" with "unsubscribe cf-metadata" in the body of your message.
