Well yes - but that is not a "live" point in polygon. It create separate layers which need to be kept up-to-date.
Harrissou was after a "live" point in polygon, which is automatically kept up-to-date through a QGIS expression. Maybe Nyall knows how to write the correct aggregate expression for that? Greetings, Andreas On 2016-10-19 14:11, Nicolas Cadieux wrote: > Try this. > > http://www.qgistutorials.com/fr/docs/points_in_polygon.html > > Nicolas > > Le 19 oct. 2016 à 06:37, DelazJ [via OSGeo.org [2]] <[hidden email]> a écrit : > >> Hi, >> >> I have a polygon layer and a point one. I'd like to calculate for each >> polygon feature, the number of points that it covers. I thought the >> aggregates functions could help me find an easier and straight expression to >> perform this (without creating intermediate layers) but I fail to find any >> correct syntax. >> >> I tried aggregate ('mypoint', 'count', "id", intersects ($geometry, >> geometry($currentfeature))) >> >> And many variants of the fourth option but It always return the total of >> points or an error. Actually this option is a filter and I wonder if i'm not >> missing a "group by" option in the aggregate function (which seems to be the >> appropriate one in my case). Is it possible? >> The work around I found is to populate an ad'hoc field in the point layer >> with overlapping polygon id, thanks to the SpatialJoin plugin, then I create >> a one-to-many relation in the project between the two layers in other to use >> relation_aggregate function. >> But I expected something more direct. >> >> Any hint, please? >> >> Thanks, Harrissou >> _______________________________________________ >> Qgis-user mailing list >> [hidden email] >> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user >> >> ------------------------- >> >> If you reply to this email, your message will be added to the discussion >> below: >> http://osgeo-org.1560.x6.nabble.com/Using-aggregates-functions-to-count-intersected-features-from-another-layer-tp5291420.html >> >> To start a new topic under Quantum GIS - User, email [hidden email] >> To unsubscribe from Quantum GIS - User, click here. >> NAML [1] > > ------------------------- > View this message in context: Re: Using aggregates functions to count > intersected features from another layer [3] > Sent from the Quantum GIS - User mailing list archive [4] at Nabble.com. > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: http://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user Links: ------ [1] http://osgeo-org.1560.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml [2] http://OSGeo.org [3] http://osgeo-org.1560.x6.nabble.com/Using-aggregates-functions-to-count-intersected-features-from-another-layer-tp5291420p5291443.html [4] http://osgeo-org.1560.x6.nabble.com/Quantum-GIS-User-f4125267.html
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