Hi Emilio,
almost correct, the unit conversion is implemented only in selected data
stores, e.g. posgis and oracle,
while all other stores are unable to deal with differences in units.
The same goes for distances in km with units in degrees, that works I
believe only with postgis when using
the geography data type.
It's been like that for the past 20 years... nobody steps up to do it. It's
too large of a task to perform in spare time,
and those that may sponsor are typically using postgis and oracle already.
Cheers
Andrea
On Fri, Dec 15, 2023 at 3:17 PM Lahr-Vivaz, Emilio <
emilio.lahr-vi...@ga-ccri.com> wrote:
> I believe that dwithin ignores the units, and will always evaluate the
> distance in the units of the layer's CRS, e.g. for EPSG:4326 it uses
> degrees.
>
> Thanks,
>
> Emilio
> ------------------------------
> *From:* geospatial techno <geospatial.techno2...@gmail.com>
> *Sent:* Friday, December 15, 2023 8:11 AM
> *To:* geoserver-users@lists.sourceforge.net <
> geoserver-users@lists.sourceforge.net>
> *Subject:* -EXT-[Geoserver-users] Conversion meters to kilometers or feet
> in DWithin filtering
>
>
> WARNING: This message is from an external source. Evaluate the message
> carefully BEFORE clicking on links or opening attachments.
> I have used the WMS service with the CQL filter in GeoServer. Currently, I
> want to use the "DWithin" spatial operators to filter features by default
> GeoServer data ("sf:archsites" layer). I specifically need to filter a
> specific point (593250, 4923867) using a radius of 10,000 meters.
> I want to substitute meters with something like kilometers.
>
> The issue is that these two commands should produce the same results in
> the output, however in geoserver, it doesn't work this way. Why?
>
> Here are the CQL filter codes:
> - CQL_FILTER=DWithin(the_geom,Point(593250 4923867),10000,meters)
> - CQL_FILTER=DWithin(the_geom,Point(593250 4923867),10,kilometers)
>
> Regards
> _______________________________________________
> Geoserver-users mailing list
>
> Please make sure you read the following two resources before posting to
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> - Earning your support instead of buying it, but Ian Turton:
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> - The GeoServer user list posting guidelines:
> http://geoserver.org/comm/userlist-guidelines.html
>
> If you want to request a feature or an improvement, also see this:
> https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer
>
>
> Geoserver-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>
--
Regards,
Andrea Aime
==
GeoServer Professional Services from the experts!
Visit http://bit.ly/gs-services-us for more information.
==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions Group
phone: +39 0584 962313
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https://www.geosolutionsgroup.com/
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