Hi Sent from my mobile On 21 Jan 2014 3:10 AM, "Mathieu Pellerin" <[email protected]> wrote: > > 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.
Agreed but in that case surely you would just disable simplification? Regards Tim > > On 21 Jan 2014 07:46, "A Huarte" <[email protected]> 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 <[email protected]> >>>>> Para: A Huarte <[email protected]> >>>>> CC: qgis-developer <[email protected]> >>>>> 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 <[email protected]> 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 <[email protected]> >>>>>>> Para: qgis-developer <[email protected]> >>>>>>> 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 >>>>>>> [email protected] >>>>>>> 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 >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/qgis-developer
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