[Qgis-user] Using qgis with big data

[Saber Razmjooei]

Hi Mark,

 

I recommend using QGIS master. It is now with multi-threaded rendering. It might not help for loading time of a single layer. But it does not freeze QGIS interface and you will be able to use most of the tools while the layer is loading.

 

Cheers,

Saber

 

 

From: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Mark Coletti
Sent: 21 May 2014 16:56
To: qgis-user
Subject: [Qgis-user] Using qgis with big data

 

Hi, again.  I'm a veteran qgis developer from the ancient times come to make a return.  ;)

 

So I'm using qgis again, and this time with big data.  I.e., I've currently got a layer with about 14 million points.  Does anyone else have experience with qgis and big data?  E.g., would performance improve if I were to create a spatial database of some kind?  On the other hand, though things are slow, I have enough RAM that I can load all 14 million points twice over.  (I.e., I load it once in qgis and again in R.)  I fear that relying on a database would add some I/O overhead.  On the other hand, using a shapefile may already entail such overhead, and using a more intelligent and spatially aware database may mitigate some performance issues.


 

 

Cheers,

 

Mark

-- 
mcoletti at gmail.com

 



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