Also, that logic can only be applied for fully opaque point symbols. As soon as you have a semi transparent symbol, the repetition of points over a same map pixel does matter and needs to be preserved. On 21 Jan 2014 07:46, "A Huarte" <ahuart...@yahoo.es> wrote:
> Ok, I will study it > > > If you have time and inclination this would be great (note feature freeze > starts in 4 days). A logical starting may be to only return one point per > map pixel though I am not sure if you can push that kind of logic over to > provider side very easily. > > Regards > > Tim > > > > > ------------------------------ > *De:* Tim Sutton <li...@linfiniti.com> > *Para:* A Huarte <ahuart...@yahoo.es> > *CC:* qgis-developer <qgis-developer@lists.osgeo.org> > *Enviado:* Lunes 20 de enero de 2014 22:57 > *Asunto:* Re: [Qgis-developer] On the fly simplication of point layers > > Hi > > > On Mon, Jan 20, 2014 at 11:47 PM, A Huarte <ahuart...@yahoo.es> wrote: > > done: > https://github.com/qgis/QGIS/pull/1093 > > This patch hides the simplification rendering tab for point layers, now > it is not supported (internally I am not trying to simplify point layers) > . Thanks Tim! > > About if there is a use case for point simplification, I know one, (gvSIG > + dielmo open lidar) use it for load extreme big point layers as LiDAR LAS > files are. > > It know the code in java and I think easy migrate to QGIS. Basically, It > ignore points by distance in a similar style as the current simplifier > classes. > > > Sorry I see my original email was not very clear - I meant if there was a > use case for point simplification as *currently implemented in master* - I > fully agree that filtering proximal points would be a good performance > booster, as would providing a point clustering capability. > > > > If you think good for QGIS I think but I can imlement it > > > That would be great! Thanks for your pull request. > > Regards > > Tim > > > . > Alvaro > > ------------------------------ > *De:* Tim Sutton <li...@linfiniti.com> > *Para:* qgis-developer <qgis-developer@lists.osgeo.org> > *Enviado:* Lunes 20 de enero de 2014 21:29 > *Asunto:* [Qgis-developer] On the fly simplication of point layers > > 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? > > Regards > > Tim > > -- > Tim Sutton - QGIS Project Steering Committee Member > ============================================== > Please do not email me off-list with technical > support questions. Using the lists will gain > more exposure for your issues and the knowledge > surrounding your issue will be shared with all. > > Irc: timlinux on #qgis at freenode.net > ============================================== > > _______________________________________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-developer > > > > > > -- > Tim Sutton - QGIS Project Steering Committee Member > ============================================== > Please do not email me off-list with technical > support questions. Using the lists will gain > more exposure for your issues and the knowledge > surrounding your issue will be shared with all. > > Irc: timlinux on #qgis at freenode.net > ============================================== > > > > > > -- > Tim Sutton - QGIS Project Steering Committee Member > ============================================== > Please do not email me off-list with technical > support questions. Using the lists will gain > more exposure for your issues and the knowledge > surrounding your issue will be shared with all. > > Irc: timlinux on #qgis at freenode.net > ============================================== > > > > _______________________________________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-developer >
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