On Mon, Jan 8, 2018 at 6:16 PM, Ian Turton <ijturton@anonymised.com> wrote:
So I was wondering whether the above call generates a pretty generous
buffer
or if something else is amiss.
I suspect it uses a 3x3 pixel buffer but I may be wrong and we don't do
that at all anymore.
It's actually a bit more complicated today, when using a text symbolizer
the search radius considers also text height and
eventually offsets off the point center (because this is a visual tool, the
machinery should react to the user clicking the label,
not the user clicking the point, that in the above map is not even visible).
For what you are trying to do GetFeaureInfo seems to be the wrong tool for
the job, it's not meant to give you
the info of a particular feature, but what's in the vicinity of whatever
the user (visually) clicked on the map,
accounting for all symbolizers used.
One thing that you can do is to force a small search radius, e.g:
https://karta.eskilstuna.se/geoserver/wms?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetFeatureInfo&FORMAT=image%2Fpng&TRANSPARENT=true&QUERY_LAYERS=sokvyx_adresser_adresser&LAYERS=sokvyx_adresser_adresser&TILED=true&INFO_FORMAT=text%2Fhtml&feature_count=12&X=116&Y=335&WIDTH=512&HEIGHT=512&SRS=EPSG%3A3010&STYLES=&BBOX=151339.19999999972%2C6583086%2C152772.79999999973%2C6584519.6&buffer=1
(the default search buffer can also be configured at the layer level if you
want)
I'd recommend also looking into GetFeature, there you can use whatever
coordinate you want and
decide on a search radius in actual meters by building a "within distance"
filter (mind, there are some limitations
on those filters if your data is expressed in geographic coordinates,
unless you are using the postgis
geography data type, or oracle).
Hope this helps
Cheers
Andrea
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