I'm trying to run a query against a WFS layer and then buffer those results
in a web app. We are currently using CQL to query some attributes and to
request only features which intersect with a specified geometry.
Our requests look like this.
http://example.com/geoserver/testing/ows?version=2.0.0&service=WFS&request=GetFeature&outputFormat=json&srsName=EPSG%3A4326&typeName=testing%3Atrees&CQL_FILTER=(intersects(geom%2CPOLYGON+((45.22109023031564+-93.35150599479677%2C+45.22166456717873+-93.35150599479677%2C+45.22166456717873+-93.35050821304321%2C+45.22109023031564+-93.35050821304321%2C+45.22109023031564+-93.35150599479677))))+AND+type_of_as+IN+(%27Black%27)+AND+approximat+IN+(%272-5%27)
That works great for selecting the correct features, but I can't figure out
how to buffer those results. I see that buffer is listed here (
http://docs.geoserver.org/stable/en/user/filter/function_reference.html)
but I can't find any examples of its use.
Can someone tell me where I should be looking to learn how to use the
buffer function?
Thanks,
Michael Moore
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