[Qgis-user] Qgis-user Digest, Vol 116, Issue 23

[Niccolo' Marchi]

sorry Paolo, you're right.

I'm using QGIS from osgeo:
- 2.8.3 64bit on win10 (laptop)
- 2.10.1 32bit on win7 (workstation)

thank you!




Il 15/10/2015 17.52, qgis-user-request at lists.osgeo.org ha scritto:
> Message: 1
> Date: Thu, 15 Oct 2015 08:26:23 +0200
> From: Paolo Cavallini<cavallini at faunalia.it>
> To:qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Handling large datasets in 2.10.1
> Message-ID:<561F470F.9040002 at faunalia.it>
> Content-Type: text/plain; charset=utf-8
>
> Il 14/10/2015 16:40, Niccolo' Marchi ha scritto:
>> >Hi all,
>> >can anyone explain to me how QGIS handles large datasets (both raster
>> >and vector)? I mean: is there a "limit" connected to the SW or other?
>> >
>> >I had very slow responses (a matter of hours) in two cases: clipping
>> >some UAV images bigger than 1Gb (5cm resolution, 112ha) and merging all
>> >the features of a shapefile (53000 geometries, almost 350Mb).
>> >
>> >This happened on a laptop (dual core 1,7 GHz, 8Gb RAM) and on a
>> >workstation (quad core 2,13 GHz, 12 Gb RAM)...and I solved quite easily
>> >with ArcMap :/
>> >
>> >any hint?
> Hi Niccolo',
> which backend are you using? In QGIS we have seveal ways of doing this,
> and speed differences may be huge. Please also specify which OS and QGIS
> version.
> All the best.
>
> -- Paolo Cavallini - www.faunalia.eu QGIS & PostGIS courses: 
> http://www.faunalia.eu/training.html


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