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: [email protected] [mailto:[email protected]] 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 -- [email protected] -- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. Whilst reasonable care has been taken to avoid virus transmission, no responsibility for viruses is taken and it is your responsibility to carry out such checks as you feel appropriate. If this email contains a quote or offer to sell pro ducts, carry out work or perform services then our standard terms and conditions (which can be found at http://www.lutraconsulting.co.uk/downloads/Lutra%20Consulting%20Standard%20Terms%20and%20Conditions.pdf shall apply unless explicitly stated otherwise. Saber Razmjooei and Peter Wells trading as Lutra Consulting.
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