When I want to find say all samples within a selected polygon, then I do that via WFS. So no change required for WFS interface – it all looks the same. Deeper down though, if the database table has DGGS field, I want the spatial part of the query transformed into something that uses that field instead of the alternative “normal” spatial coordinates. Why? Because I while I think DGGS presents significant advantage for querying, I suspect it might be slow for rendering. Could be wrong, but that is why thinking about hydrid table. Also, the query needs to be done via DGGS library, not merely transforming DGGS into coordinates and using JTS methods. Just seeing it as coordinate transform wouldn’t invoke a new way to query would it?
From: Jody Garnett <jody.garn...@gmail.com> Sent: Wednesday, 20 November 2019 09:38 To: Phil Scadden <p.scad...@gns.cri.nz> Cc: geoserver-users <geoserver-us...@lists.sourceforge.net>; geotools-devel@lists.sourceforge.net Subject: Re: [Geotools-devel] DGGS and WFS Is this not just a coordinate transformation challenge? That is defining a new reference system. I do not think I understand why a new WFS plugin would be required as they are orthogonal concerns. -- Jody Garnett On Tue, 19 Nov 2019 at 12:28, Phil Scadden <p.scad...@gns.cri.nz<mailto:p.scad...@gns.cri.nz>> wrote: Was at FOSS4G Oceania conference and went to very interesting talk on DGGS spatial coordinates. I am guessing it will be a long time before this becomes mainstream but I was wondering how difficult it would be for WFS spatial queries to use a DGGS field in tables which also contained “normal” geography field. Doing spatial queries against global databases (ie cant use a projected coordinates system) around the poles and antemeridian is tough. DGGS fixes the problem. Normal rendering code etc would be unaffected. How easy would it be to do a replacement WFS plugin? Notice: This email and any attachments are confidential and may not be used, published or redistributed without the prior written consent of the Institute of Geological and Nuclear Sciences Limited (GNS Science). If received in error please destroy and immediately notify GNS Science. Do not copy or disclose the contents. _______________________________________________ GeoTools-Devel mailing list GeoTools-Devel@lists.sourceforge.net<mailto:GeoTools-Devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/geotools-devel Notice: This email and any attachments are confidential and may not be used, published or redistributed without the prior written consent of the Institute of Geological and Nuclear Sciences Limited (GNS Science). If received in error please destroy and immediately notify GNS Science. Do not copy or disclose the contents.
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