[Qgis-developer] On the fly simplication of point layers

[Tim Sutton]

Hi Alex


On Mon, Jan 20, 2014 at 10:37 PM, Alex Mandel <tech_dev at wildintellect.com>wrote:

> On 01/20/2014 12:29 PM, Tim Sutton wrote:
> > Ok I guess you can see where I am going to go with this email :-) Is
> there
> > any point to allowing users to simplify point layers? Alvaro, can your
> > remove the point rendering tab in layer properties (and I guess check
> > internally that you are not trying to simplify point layers)? Or is
> there a
> > use case for point simplification that I am not getting?
> >
>

Yeah I am familiar with clustering (and would love to see it as a feature
in QGIS), but the simplification implementation (as coming in 2.2) is there
to strip vertices from geometries to speed up rendering. I don't think
there is much benefit of having that applied to points (since they are
composed of a single vertex.

Regards

Tim


> > Regards
> >
> > Tim
> >
> >
>
> In the server world there is, could also be useful for navigating
> gigantic data sets. Should definitely be a user toggled option.
>
> Clustering
>
> http://dev.openlayers.org/releases/OpenLayers-2.13.1/examples/strategy-cluster.html
>
> There are a few different ways to do it, and doing it server side can
> save time when rendering WMS or prevent overload when WFS.
>
> Thanks,
> Alex
>
>


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Tim Sutton - QGIS Project Steering Committee Member
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