Am Mittwoch, 1. Juni 2011, um 16.22:46 schrieb Brad Nesom: > something similar to this? > http://help.arcgis.com/en/webapi/flex/samples/index.html?sample=FeatureLaye > rClustering I don't mean for the post to irritate. It is such an elegant > solution (although a web solution) I just had to show it. > Maybe someone can work some magic in qgis.
Just for completeness, the same thing as Open Source: http://openlayers.org/dev/examples (Search for cluster) http://mapserver.org/mapfile/cluster.html > > On Fri, May 27, 2011 at 6:09 AM, Andreas Neumann <[email protected]>wrote: > > No, the point displacement render is almost the opposite to clustering. > > It explodes feature that are stacked on top of each other so one can see > > that there are several features at the same place with potentially > > different symbolization. > > > > A cluster renderer would be a valuable addition to QGIS as a separate > > renderer. If your data resides in Postgis, you can also use Postgis and a > > view if you need clustering. I once did this for a report information > > system. You can round the coordinates and group/aggregate them and then > > average by its original coordinates so that the cluster position is at > > the weighted coordinate of all input point geometries. It is not very > > hard to do in Postgis. > > > > Andreas > > > > On Fri, 27 May 2011 11:50:07 +0200, Anita Graser wrote: > >> Isn't that what Point Displacement Renderer does? > >> > >> Best wishes, > >> > >> Anita > >> > >> On Fri, May 27, 2011 at 10:59 AM, Giovanni Manghi wrote: > >> seems a nive idea for a plugin. > >> > >>> Cheers > >>> > >>> -- Giovanni -- > >>> > >>> On Fri, 2011-05-27 at 16:57 +0800, maning sambale wrote: > >>> > I'm looking for ways to create simple visualization of point > >>> > >>> clusters > >>> > >>> > (in QGIS of course) similar to the openlayers cluster strategy: > >>> > http://openlayers.org/dev/examples/strategy-cluster.html [1] > >>> > > >>> > The purpose is simply for visualization and can be configured by > >>> > >>> map scale. > >>> > >>> > >>> _______________________________________________ > >>> Qgis-user mailing list > >>> [email protected] [2] > >>> http://lists.osgeo.org/mailman/listinfo/qgis-user [3] > >> > >> Links: > >> ------ > >> [1] http://openlayers.org/dev/examples/strategy-cluster.html > >> [2] mailto:[email protected] > >> [3] http://lists.osgeo.org/mailman/listinfo/qgis-user > >> [4] mailto:[email protected] > > > > -- > > -- > > Andreas Neumann > > Böschacherstrasse 10A > > 8624 Grüt (Gossau ZH) > > Switzerland > > > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-user -- Pirmin Kalberer Sourcepole - Linux & Open Source Solutions http://www.sourcepole.com _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
