Hi Phil. You can see multiple examples on using OGC filters, I'm sharing some links I remember fast now: https://geoserver.geo-solutions.it/edu/en/vector_data/filter.html
https://gis.stackexchange.com/a/26298 https://docs.geoserver.org/stable/en/user/filter/function.html And of course is good to have a complete reference functions list: https://docs.geoserver.org/stable/en/user/filter/function_reference.html Remember you can also list available functions in your Geoserver instance with a WFS GetCapabilities request: http://localhost:8080/geoserver/wfs?request=GetCapabilities If you share your query, maybe I or someone else can help you converting it :) Regards, Fernando Mino == GeoServer Professional Services from the experts! Visit http://goo.gl/it488V for more information. == Fernando Mino Software Engineer GeoSolutions S.A.S. Via di Montramito 3/A 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 1660272 http://www.geo-solutions.it http://twitter.com/geosolutions_it ------------------------------------------------------- Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia. This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail. From "Phil Scadden" p.scad...@gns.cri.nz To "geoserver-users" geoserver-users@lists.sourceforge.net Cc Date Mon, 21 Oct 2019 23:50:49 +0000 Subject [Geoserver-users] ECQL and polar regions. Convert CQL to OGC filter?? I am having some issues with queries that combine both attribute expressions (currently in ECQL) and spatial queries when in polar regions, and using layers in EPSG:4326. The problem with ECQL spatial operators is that the expressions must be in terms of native CRS. Away from the poles, I manage this by splitting any polygon that crosses the 180 in two polygons and adding an AND clause to the query. Splitting a polygon that crosses the 180 AND includes a pole is challenging to say to the least. If someone has an algorithms to do this, then I am all ears. Conceptually it would be easier to request the polygon in the projected coordinates but cant do that with ECQL. It seems I would have to convert the CQL expression into an OGC filter. Does anyone have existing code for this? Does that actually exist somewhere in the geoserver source code even? 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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