[mapserver-dev] WCS 2.0 support and specification compliance

[Stephan Meißl]

On Fri, 2012-08-17 at 15:54 +0200, Andrea Aime wrote:
> On Fri, Aug 17, 2012 at 2:49 PM, Fabian Schindler
> <fabian.schindler at eox.at> wrote:
>         Currently the "scaling" extension for WCS 2.0 is under
>         discussion at the OGC WCS standards working group, and, once
>         it is standardized, the "Size" and "Resolution" will likely
>         have to be adjusted. (With the current state of the document,
>         they will be replaced by the "scaleFactor", "scaleAxes" and
>         "scaleDomain" parameters). I think the standard document is
>         not publicly available, only in the OGC internal system.
>         
>         Thank you for the hint of putting the parameters into the
>         "wcs:Extension" element. This was a recent change in the
>         corrigendum that may not have been taken into account in the
>         implementation.
>         
> 
> 
> Hi Fabian,
> thanks a lot for the answer. Do you know if the XML schemas for these
> extensions are available anywhere?
> Also, is there any timeframe before OGC publishes the extensions as
> official documents, or at least as RFCs?
> 
> 
> Cheers
> Andrea
> 
> 
Hi Andrea,

from OGC's WCS standards working group I can report that several
extensions are currently discussed and will be available as public RFCs
sooner or later: CRS, GeoTIFF, Scaling, Interpolation, Range subsetting,
netCDF, JPEG2000, etc.

The CRS extension has been finished by the SWG some time ago and should
really be released soon. It defines the two additional parameters
"subsettingCrs" and "outputCrs" for GetCoverage requests which, as you
correctly noticed, are added to the wcs:Extension element. Unfortunately
it is a bit complicate to guess release dates, seems like OGC management
has a high workload.

I guess you're aware of the recently released corrigendum versions of
WCS core 2.0.1 and GMLCOV 1.0.1 including schema updates. A KVP
extension corrigendum is currently under vote ending mid September. Btw.
also the SOAP extension would need a loving hand but it seems like
nobody is really interested.

Regarding XML schemas, naturally the final schemas are only available
once OGC releases them at the official repository [1]. However, I try to
provide also work-in-progress versions (at least the ones I'm working
on) here [2]. Please note and be warned that this is my personal
playground and nothing official at all.

Am I right that you're implementing WCS 2.0 in GeoServer? Anyway, it's
great to see increasing interest in WCS.

cu
Stephan

[1] http://schemas.opengis.net/
[2] https://eoxserver.org/browser/sandbox/sandbox_schemas/schemas/wcs