Hi Jukka,
Thanks for your response.
For our needs, a common list for all layers provided by the service would be
adequate, but a per feature type would be ideal, and ensure the best level of
interoperability.
The particular use case is for clients harvesting copies of datasets via WFS
1.1.0 for local institutional caches - at present they are downloading in the
default CRS, then locally reprojecting. We'd like to be able to advertise
locally relevant CRS's to enable server side reprojection.
With WMS, the long list is perhaps overkill, and again, being able to identify
a shorter list of relevant SRS's would be useful (I don't think you can select
a short lis at present?). The long list includes many inappropriate (useless)
CRS's - for example I understand you get offered Antarctic Polar SRS's even if
you data is equatorial or Arctic, just because Geoserver "can do it"
Ideally (I think - but open to debate) the admin UI would allow a list of
advertised SRS's to be selected, and whether they are advertised per feature
class or globally is also selectable.
Depending on the cost, I may be able to fund this enhancement.
Thanks again,
Brent Wood
________________________________
From: Rahkonen Jukka <[email protected]>
To: "[email protected]"
<[email protected]>
Sent: Thursday, November 14, 2013 6:58 PM
Subject: Re: [Geoserver-users] SRS advertised in capabilities document (with
possible funding)??
Hi,
WMS side is handled already. By default the long SRS/CRS list is advertised but
it can be made shorter. Try
http://demo.opengeo.org/geoserver/wms?service=WMS&version=1.3.0&request=GetCapabilities
However, you are right with WFS and Geoserver advertises only DefaultSRS
http://demo.opengeo.org/geoserver/wms?service=WFS&version=1.1.0&request=GetCapabilities
It would be useful to have a short OtherSRS if WFS clients could make a
selection list based on that. WFS 1.0.0 standard supports only default SRS so
there is no place for OtherSRS in GetCapabilities with that version so we must
be talking about WFS >= 1.1.0.
I believe that WFS standard mandates that what is advertised in the
GetCapabilities must be usable. I think it is compliant that Geoserver offers a
support for using other SrsNames in WFS 1.1.0 and also in WFS 1.0.0 even this
possibility is not advertised in GetCapabilities. But as I said, having an
OtherSRS list would be an improvement. Are you after a common list for the
whole WFS service or a per feature type setting for OtherSRS?
-Jukka Rahkonen-
________________________________
Brent Wood wrote:
> This has been discussed before, but I'm not aware of any solution.
> Several WMS/WFS client applications present users with a list of available
> SRS determined from the capabilities document - if there are no alternatives
> listed, then only the default SRS is available.
> Geoserver does NOT provide the list of supported SRS in the capabilities doc
> (which I think makes it non-compliant with the spec? eg: 7.2.4.6.7 of the
> WMS spec)
> I'm aware of earlier discussions that including some 5000 CRS's in every
> layer creates a bloated document & I agree in principle.
> However, to solve one of the problems we have encountered in our migration
> fom mapserver to Geoserver, is it possible to allow Geoserver to advertise
> specified CRS's in the capabilities document? So the admin menu lets some
> CRS's be identified & selected to be so advertised. This would not preclude
> unadvertised CRS's being supported as well, but I think does address this
> issue.
> If this is considered viable, I have access to some funding which could pay
> for it to be implemented.
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