<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div><span>Hi Paolo, about "performance reasons" recently we spoken about this item in other thread:</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="background-color: transparent;"><span>[Qgis-developer] On the fly simplication of point layer<br></span></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><br></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial,
'Lucida Grande', sans-serif; font-style: normal;"><span><span style="font-size: 12pt;">In order to render so big layers as LAS files are, t</span>here are two strategies, discard points on renderer side, or on featureiterator side by distance proximity.</span></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 12pt; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><span><br></span></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;">I think interesting to continue this item.</div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><span>Alvaro</span></div><div
style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><span><br></span></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-style: normal;"><span><br></span></div><div><br></div><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">De:</span></b> Paolo Cavallini
<cavallini@faunalia.it><br> <b><span style="font-weight: bold;">Para:</span></b> Etienne Tourigny <etourigny.dev@gmail.com> <br><b><span style="font-weight: bold;">CC:</span></b> qgis-developer <qgis-developer@lists.osgeo.org> <br> <b><span style="font-weight: bold;">Enviado:</span></b> Miércoles 29 de enero de 2014 11:44<br> <b><span style="font-weight: bold;">Asunto:</span></b> Re: [Qgis-developer] Lidar data into QGIS<br> </font> </div> <div class="y_msg_container"><br>-----BEGIN PGP SIGNED MESSAGE-----<br clear="none">Hash: SHA1<br clear="none"><br clear="none">Il 29/01/2014 11:37, Etienne Tourigny ha scritto:<br clear="none">> There was some discussion about LAS format and PDAL on the GDAL mailing list a few<br clear="none">> weeks ago, there is probably some interesting info there.<br clear="none"><br clear="none">I suppose you mean:<br clear="none"><a shape="rect"
href="http://lists.osgeo.org/pipermail/gdal-dev/2013-November/037613.html" target="_blank">http://lists.osgeo.org/pipermail/gdal-dev/2013-November/037613.html</a><br clear="none">So the idea is writing an OGR driver for PDAL.<br clear="none">Still unsure if the result would be usable in QGIS, for performance reasons.<br clear="none">Anyway, the indication seems to go with PDAL rather than libLAS, good to know.<br clear="none">Thanks a lot.<br clear="none">- -- <br clear="none">Paolo Cavallini - www.faunalia.eu<br clear="none">Corsi QGIS e PostGIS: <a shape="rect" href="http://www.faunalia.eu/training.html" target="_blank">http://www.faunalia.eu/training.html</a><br clear="none">-----BEGIN PGP SIGNATURE-----<br clear="none">Version: GnuPG v1<br clear="none">Comment: Using GnuPG with Icedove - <a shape="rect" href="http://www.enigmail.net/" target="_blank">http://www.enigmail.net/</a><br clear="none"><br
clear="none">iEYEARECAAYFAlLo250ACgkQ/NedwLUzIr5h/wCcCJ5atUj0jgppSgnAX0b4Z+hN<br clear="none">NGoAniAQF9AHZvpOBq7zX+x+VKbxPWXf<br clear="none">=uuo4<div class="yqt2689367377" id="yqtfd57970"><br clear="none">-----END PGP SIGNATURE-----<br clear="none">_______________________________________________<br clear="none">Qgis-developer mailing list<br clear="none"><a shape="rect" ymailto="mailto:Qgis-developer@lists.osgeo.org" href="mailto:Qgis-developer@lists.osgeo.org">Qgis-developer@lists.osgeo.org</a><br clear="none"><a shape="rect" href="http://lists.osgeo.org/mailman/listinfo/qgis-developer" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-developer</a><br clear="none"></div><br><br></div> </div> </div> </blockquote><div></div> </div></body></html>