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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 markh): Replying to [comment:18 davidhassell]: > So, transform_crsOSGB defines a mapping from coordinates '''x''' and '''y''' to latitude-longitude coordinates on a particularly shaped earth; and transform_crsWGS84 defines a mapping from coordinates '''lat''' and '''lon''' to latitude-longitude coordinates on a different particularly shaped earth. crsOSGB and crsWGS84 do a lot more than define a transform. They define a coordinate reference system that coordinates are defined with respect to. This is fundamental and far more powerful than defining a transformation, it provides a well recognised definition of what the coordinate means. A transformation, a derived coordinate, is a useful by-product of the definition of a coordinate reference system, but it is only a by-product. I think this has been implicit in CF for a long time, but with CF- NetCDF1.7 it becomes clear and explicit. I would like it clearly represented in the data model. -- Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/107#comment:19> 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.
