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#95: Development of CF 1.5 Data Model -----------------------------+---------------------------------------------- Reporter: markh | Owner: [email protected] Type: task | Status: new Priority: medium | Milestone: Component: cf-conventions | Version: Resolution: | Keywords: -----------------------------+---------------------------------------------- Comment (by markh): Replying to [comment:31 mgschultz]: > just a quick question as my eye caught the word "monotonic" for domain axis (if this has been discussed elsewhere, please forgive me): how about "circular coordinates"? If you cut out Europe from a global map of 0..359 degrees, many tools will put for example 350, 355, 0, 5, 10 degrees in the lon variable. Should the data model enforce -10, -5, 0, 5, 10 instead? Martin Hi Martin, interestung question you raise. My view, on first look at the spec, is that a strictly monotonic coordinate would have to be -10, -5, 0, 5, 10 or 0, 5, 10, 350, 355 both of which seem sub-optimal to me. I think there is a potential solution, which we could propose (separate from this ticket) which would be to enable the explicit definition of circular coordinates. This could be done, for example, by providing two new attributes, '''circular''' (a boolean flag) and '''modulus''' the number where the values 'wrap around', which could be used by any coordinate. Perhaps I have missed that this capability already exists, maybe it is implicit for the longitude coordinate; I hope someone will correct me, if I have. If not, and this functionality would be new, I suggest that we break the discussion out into a separate ticket and propose a change for CF 1.7. mark -- Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/95#comment:32> 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.
