stevenzwu commented on code in PR #15834: URL: https://github.com/apache/iceberg/pull/15834#discussion_r3243445163
########## format/spec.md: ########## @@ -242,10 +242,12 @@ For `geometry` type, the CRS does not affect geometric calculations, which are a The default CRS value `OGC:CRS84` means that the objects must be stored in longitude, latitude based on the WGS84 datum. -Custom CRS values can be specified by a string of the format `type:identifier`, where `type` is one of the following values: +Non-default CRS values are specified by any string that uniquely identifies a coordinate reference system associated with this type. +To maximize interoperability, suggested formats for CRS include, but are not limited to: +* `<context>:<identifier`: Identifies a CRS by name or other identifier in some well-documented context. Examples: `OGC:CRS84`, `EPSG:4326`, `IGNF:ATI` and `SRID:0` Review Comment: We changed `type` to `context` here. I am not a geo domain expert. I am just wondering if `context` is a widely accepted term in the geo space. both `type` and `context` are very generic. is `authority` too restrictive? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
