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Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
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Hi Peter, I'll start the ball on this with a short answer.CF datasets are self-describing. They do not reference a controlled vocabulary of coordinate reference systems external to the file. Thus a CF subset of a valid CF dataset is always another valid CF dataset and its geo-location is self-describing -- even if it has fewer dimensions than the parent file. The question you are asking does not really apply to CF datasets "in their native habitat".
Echoing your question back: CF 1.2 (??) added a section on "5.6. Grid Mappings and Projections Horizontal Coordinate Reference Systems", which is specifically to handle the associations between CF datasets and the corresponding crs. (http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.4/cf-conventions.html#grid-mappings-and-projections). Should this mapping be refined to address solutions to 4D (n-D) subsetting that you have developed in WCS?
- Steve ============================= Peter Baumann wrote:
Hi community,in the WCS group we are wondering how you deal with subsetting operations in n-D data spaces - obviously a result with less dimensions than the original cube needs to get a different CRS associated. How do you find the appropriate result CRS, for example, for a x/t cut from an x/y/z/t cube?thanks in advance for any bits of wisdom, Peter
-- Steve Hankin, NOAA/PMEL -- Steven.C.Hankin@xxxxxxxx 7600 Sand Point Way NE, Seattle, WA 98115-0070 ph. (206) 526-6080, FAX (206) 526-6744 "The only thing necessary for the triumph of evil is for good men to do nothing." -- Edmund Burke
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