Hi Paolo, about "performance reasons" recently we spoken about this item in 
other thread:

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


In order to render so big layers as LAS files are, there are two strategies, 
discard points on renderer side, or on featureiterator side by distance 
proximity.

I think interesting to continue this item.
Alvaro




>________________________________
> De: Paolo Cavallini <cavall...@faunalia.it>
>Para: Etienne Tourigny <etourigny....@gmail.com> 
>CC: qgis-developer <qgis-developer@lists.osgeo.org> 
>Enviado: MiƩrcoles 29 de enero de 2014 11:44
>Asunto: Re: [Qgis-developer] Lidar data into QGIS
> 
>
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>Il 29/01/2014 11:37, Etienne Tourigny ha scritto:
>> There was some discussion about LAS format and PDAL on the GDAL mailing list 
>> a few
>> weeks ago, there is probably some interesting info there.
>
>I suppose you mean:
>http://lists.osgeo.org/pipermail/gdal-dev/2013-November/037613.html
>So the idea is writing an OGR driver for PDAL.
>Still unsure if the result would be usable in QGIS, for performance reasons.
>Anyway, the indication seems to go with PDAL rather than libLAS, good to know.
>Thanks a lot.
>- -- 
>Paolo Cavallini - www.faunalia.eu
>Corsi QGIS e PostGIS: http://www.faunalia.eu/training.html
>-----BEGIN PGP SIGNATURE-----
>Version: GnuPG v1
>Comment: Using GnuPG with Icedove - http://www.enigmail.net/
>
>iEYEARECAAYFAlLo250ACgkQ/NedwLUzIr5h/wCcCJ5atUj0jgppSgnAX0b4Z+hN
>NGoAniAQF9AHZvpOBq7zX+x+VKbxPWXf
>=uuo4
>
>-----END PGP SIGNATURE-----
>_______________________________________________
>Qgis-developer mailing list
>Qgis-developer@lists.osgeo.org
>http://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
>
_______________________________________________
Qgis-developer mailing list
Qgis-developer@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-developer

Reply via email to