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#104: Clarify the interpretation of scalar coordinate variables -----------------------------+---------------------------------------------- Reporter: jonathan | Owner: [email protected] Type: enhancement | Status: new Priority: medium | Milestone: Component: cf-conventions | Version: Resolution: | Keywords: -----------------------------+---------------------------------------------- Comment (by jonathan): Dear all Thank you for your thoughtful comments, Alison. Following the above useful discussions with John and Steve, and further email discussions, I'd like to add one more change to this proposal: In Section 1.2, change the definition scalar coordinate variable: A scalar variable that contains coordinate data. Functionally equivalent to either a size one coordinate variable or a size one auxiliary coordinate variable. to scalar coordinate variable. A scalar variable (i.e. one with no dimensions) that contains coordinate data. Depending on context, it may be functionally equivalent either to a size-one coordinate variable (Section 5.7) or to a size-one auxiliary coordinate variable (Sections 6.1 and 9.2). This is in order to define what "scalar" means, and to provide pointers to the relevant parts of the document where the role of scalar coordinate variables is clarified. It's become clear from these discussions that it would be better to indicate the role of scalar coordinate variables explicitly. I will make a proposal in another ticket to define new `cf_role` values for that purpose. However, if agreed, that wouldn't be implemented until CF 1.7 or 1.8. At the moment we are discussing the interpretation and the data model of CF 1.5. None of the changes proposed in this ticket intend to change anything about CF-netCDF; they are concerned only with clarifying what CF 1.5 means. I don't want to make a proposal to modify CF metadata in this ticket, because I fear that it would delay the conclusion of the data model discussion, which has already been in progress for a couple of years (beginning in ticket 68)! If this ticket is agreed, we can go back to continuing the data model discussion in ticket 98. Following other comments by John, we will there propose inserting some text about the correspondence between dimension/auxiliary and independent/dependent coordinates in the data model. Cheers Jonathan -- Ticket URL: <https://cf-pcmdi.llnl.gov/trac/ticket/104#comment:66> 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.
