[Geoserver-users] Geoserver WMS Re-Projection

Hi Y’all,

I was wondering if anyone knows if it is possible to have GeoServer rerproject WKT coordinates in a cql_filter string for WMS requests.

Our web application’s map is set to 3857, but we store our product geometries in 4326. So when we make a WMS request, we need to transform our 3857 WKT string to 4326. But I was hoping GeoServer had the ability to do this for us, so we don’t have to muck around with doing the conversion ourselves.

Thanks!

Brandon

You may be able to call a reprojection function in your CQL?

http://docs.geotools.org/latest/userguide/library/main/function_list.html#reproject-geometry-sourcecrs-targetcrs-result

···

On 13 April 2017 at 12:52, Brandon Tran <btran@anonymised.com> wrote:

Hi Y’all,

I was wondering if anyone knows if it is possible to have GeoServer rerproject WKT coordinates in a cql_filter string for WMS requests.

Our web application’s map is set to 3857, but we store our product geometries in 4326. So when we make a WMS request, we need to transform our 3857 WKT string to 4326. But I was hoping GeoServer had the ability to do this for us, so we don’t have to muck around with doing the conversion ourselves.

Thanks!

Brandon


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Jody Garnett

Yes, or, as an alternative, call setCRS (in that same page) to declare the geometry CRS and let GeoServer
handle the reprojection (I’m sure it can in WFS, never checked in WMS).
Ideally, it would be nice if the Extended CQL parser could handle Postgis own “Extended WKT” and allow
the CRS definition inside the geomtery, e.g., “SRID=4326;POINT(10 10)”, but I’m not sure how hard
it is to have javacc understand that form too (pull requests welcomed).

Cheers
Andrea

···

On Tue, Apr 18, 2017 at 6:26 AM, Jody Garnett <jody.garnett@anonymised.com> wrote:

You may be able to call a reprojection function in your CQL?

http://docs.geotools.org/latest/userguide/library/main/function_list.html#reproject-geometry-sourcecrs-targetcrs-result


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Jody Garnett

On 13 April 2017 at 12:52, Brandon Tran <btran@anonymised.com> wrote:

Hi Y’all,

I was wondering if anyone knows if it is possible to have GeoServer rerproject WKT coordinates in a cql_filter string for WMS requests.

Our web application’s map is set to 3857, but we store our product geometries in 4326. So when we make a WMS request, we need to transform our 3857 WKT string to 4326. But I was hoping GeoServer had the ability to do this for us, so we don’t have to muck around with doing the conversion ourselves.

Thanks!

Brandon


Check out the vibrant tech community on one of the world’s most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot


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