I see that union and buffer are listed features here: http://docs.geoserver.org/latest/en/user/filter/function_reference.html#filter-function-reference
Are there any examples of how to use them with WFS?
In the application the user should be able to draw a rectangle which is used with an intersect filter to select all the parcels the rectangle intersects with (this part is working).
I’d then like to be able to get a buffer of the union of the selected parcels.
Is this something WFS can do, or do I need to be looking at WPS and JTS?
Thanks,
Michael Moore