Hi Erik, Are you able to confirm the issue still exists on newer versions of MapServer (8.4 or 8.2.2)? There was a fix related to CLUSTER and PostGIS added to the newer versions, see https://github.com/MapServer/MapServer/pull/7111.
Seth -- web:https://geographika.net & https://mapserverstudio.net mastodon: @geographika@mastodon.social On Tue, Feb 18, 2025, at 10:16 AM, Guldberg, Erik via MapServer-users wrote: > It's interesting to note that, if I set a label, like the name of the object > ("tittel"), it's always correct. It's only the getFeatureInfo that is wrong. > > Also, I've tried to create a cluster layer from another dataset, where the > main different is, I believe, that the projection is different, and I don't > have the same problem there. Using the same cluster settings. > > *Fra:* MapServer-users <mapserver-users-boun...@lists.osgeo.org> *På vegne av > *Guldberg, Erik via MapServer-users > *Sendt:* fredag 14. februar 2025 14:51 > *Til:* mapserver-users@lists.osgeo.org > *Emne:* [MapServer-users] Wrong and inconsistent GetFeatureInfo result for > CLUSTER layer > > Hi, > I have a WMS service, https://kart.ra.no/wms/brukerminner, where I have > problems getting correct getFeatureInfo results from a layer with CLUSTER > content. > > It contains the cluster layer and a regular point layer for the same data. > The regular point layer is shown at 1:50 000. > > For single objects in both the cluster layer, I want to be able to use > getFeatureInfo. This works, but the problem is that the results most of the > time are wrong, and that they change for time to time, likely due to change > in zoom level. For the regular point layer, the result is always correct. > I've also created a test cluster layer without the scale limit, and that also > gives the correct result if I zoom in enough. > > All the symbols are placed correctly in the map, for all layers. I've used > the database, and also this OGC API service (that uses the same data source > as the WMS) as a reference: https://api.ra.no/brukerminner > > I'm using MapServer version 7.6.4. > > Some example queries, using QGIS. > Wrong result. The object I get in the getfeatureinfo is 64 km away from where > I clicked. > https://kart.ra.no/wms/brukerminner?language=nor&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo&BBOX=760392.02671199827454984%2C8263040.88853696268051863%2C1033357.36004533339291811%2C8407916.1385369636118412&CRS=EPSG%3A3857&WIDTH=1984&HEIGHT=1053&LAYERS=Brukerminner&STYLES=&FORMAT=image%2Fpng&QUERY_LAYERS=Brukerminner&INFO_FORMAT=text%2Fhtml&I=1069&J=616&FEATURE_COUNT=10 > > Zoomed in a bit more gives another, wrong result. This is 8.7 km away from > where I clicked: > https://kart.ra.no/wms/brukerminner?language=nor&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetFeatureInfo&BBOX=871972.11004533257801086%2C8307721.07603696547448635%2C940213.44337866583373398%2C8343939.88853696547448635&CRS=EPSG%3A3857&WIDTH=1984&HEIGHT=1053&LAYERS=Brukerminner&STYLES=&FORMAT=image%2Fpng&QUERY_LAYERS=Brukerminner&INFO_FORMAT=text%2Fhtml&I=1022&J=627&FEATURE_COUNT=10 > > This is the Test-layer, how it looks now. I've tried different variations of > PROCESSING settings. > > LAYER > NAME "TEST" > DEBUG 5 > TYPE POINT > STATUS ON > TEMPLATE "../templates/brukerminner.html" > HEADER "../templates/header.html" > FOOTER "../templates/footer.html" > TOLERANCEUNITS pixels > TOLERANCE 25 > # MINSCALEDENOM 50000 > METADATA > "wms_enable_request" "*" > "wms_include_items" "tittel" > > "wms_title" "TEST" > "wms_feature_info_mime_type" "text/html" > > END > PROJECTION > "init=epsg:4326" > END > > EXTENT -19.76 54.57 45.57 82.67 #4326 > PROCESSING "CLOSE_CONNECTION=DEFER" > > CONNECTIONTYPE POSTGIS > CONNECTION "host=host dbname=db user=user password=password port=5432" > DATA "geom from xx.xx using unique id using srid=4326" > > > LABELITEM "Cluster_FeatureCount" > > # PROCESSING "CLUSTER_ALGORITHM=SIMPLE" > PROCESSING "CLUSTER_GET_ALL_SHAPES=ON" > PROCESSING > "ITEMS=tittel,beskrivelse,fylke,kommune,opprettet,endret,opprettet_av,linkkulturminnesok,gpsposisjon" > # PROCESSING "CLUSTER_KEEP_LOCATIONS=ON" > CLUSTER > MAXDISTANCE 50 > > REGION "ellipse" > END > > CLASS > NAME "Brukerminne" > EXPRESSION ("[Cluster_FeatureCount]" = "1") > STYLE > SYMBOL "brukerminne" > COLOR 200 0 0 > SIZE 27 > OFFSET 0 -13.5 > END > END > END > > > Anyone with ideas on what's wrong? > > > Thanks, > Erik > > _______________________________________________ > MapServer-users mailing list > MapServer-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users >
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