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

Tim Sutton lists at linfiniti.com
Wed Jan 22 04:47:42 PST 2014


On Wed, Jan 22, 2014 at 1:23 PM, Martin Dobias <wonder.sk at gmail.com> wrote:

> On Wed, Jan 22, 2014 at 4:33 PM, Tim Sutton <lists at linfiniti.com> wrote:
> >>
> >> Actually the point displacement renderer already does clustering,
> >> though it lacks more options to customize how the clustered symbol
> >> would look like.
> >>
> >
> > Doesnt it do the reverse? i.e. when more than one point falls in the same
> > place, it shifts them aside so they are all visible. If it can be made to
> > produce a scaled symbol based on the number of underlying points that
> would
> > be cool.That would also be a good time to change its name to 'Custer or
> > displace' or something.
> I think that was what the renderer did originally, but nowadays it
> also groups points within configured distance. Unfortunately it always
> tries to draw a circle around the clustered point with original
> symbols. If we introduced few rendering options, it would be more
> useful:
> - draw just the clustered symbol for the whole group
> - scale the clustered symbol depending on the number of points inside
Yeah that should do it!



> Cheers
> Martin

Tim Sutton - QGIS Project Steering Committee Member
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