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

A Huarte ahuarte47 at yahoo.es
Mon Jan 20 14:11:00 PST 2014


And, I wrote my reply wrong :-)

About point simplification, the strategy is no fetch in the featureiterator some points using a tolerance.
Do you think that I must try it ?



>________________________________
> De: Tim Sutton <lists at linfiniti.com>
>Para: A Huarte <ahuarte47 at yahoo.es> 
>CC: qgis-developer <qgis-developer at 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 <ahuarte47 at 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 <lists at linfiniti.com>
>>>Para: qgis-developer <qgis-developer at 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
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>>>
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>
>
>
>
>-- 
>
>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
>==============================================
>
>
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