Hi,<br>I actually haven't got the point cloud data as yet... but my guess is that it would be <br>double precision. And where are the "thoughts on the topic"? I didn't get any :)<br><br>Cheers,<br>Ed<br><br>
<div class="gmail_quote">On Fri, Mar 9, 2012 at 8:46 AM, Nicklas Avén <span dir="ltr"><<a href="mailto:nicklas.aven@jordogskog.no">nicklas.aven@jordogskog.no</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hallo<br>
<br>
What is the precision of your points?<br>
<br>
Are they integer or double precision?<br>
<br>
If it is just integer I think PostGIS might give you quite a big<br>
overhead.<br>
<br>
Here is some thoughts (from Paul I guess?) on the topic.<br>
<br>
/Nicklas<br>
<div><div class="h5"><br>
<br>
On Fri, 2012-03-09 at 08:19 +0100, Ed Linde wrote:<br>
> Hi All,<br>
> I have this really massive 3D point cloud dataset (few TBs) that I<br>
> would like to compute an intersection with OSM geometry. The problem<br>
> now is that if its worth loading all of<br>
> this data into postgres/postgis and then indexing it? How long would<br>
> it take? Or am I better of thinking of writing some C/C++ code that<br>
> can compute some sort of a GRID on top of these cells and<br>
> then possibly use GDAL libraries to compute an intersection? Problem<br>
> being that I don't know what projection the point cloud is in and if I<br>
> need to re-project etc... and postgis would<br>
> have been ideal for it. What do you guys recommend I do?<br>
><br>
><br>
> Cheers,<br>
> Manu<br>
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