[Qgis-user] Faster Intersects

[Dennis Burgess]

In the format, are you talking about the shape or the CSV with 2million lines?  



Dennis Burgess

Author of "Learn RouterOS- Second Edition” 
Link Technologies, Inc -- Mikrotik & WISP Support Services 
Office: 314-735-0270  Website: http://www.linktechs.net 
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-----Original Message-----
From: Qgis-user <qgis-user-bounces at lists.osgeo.org> On Behalf Of Raymond Nijssen via Qgis-user
Sent: Friday, September 9, 2022 11:11 AM
To: qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] Faster Intersects

Some things to check:

* Is your data local?
* Is it in a fast file format? (for example .gpkg or .shp and not .csv or .geojson)
* Does the data have a spatial index?
* Is the geometry very complicated, like a huge multi polygon with thousands of vertices and islands? In that case, split it up in several polygons.

Hope this helps. Anyway, it should not need to take this long.

Raymond



On 09-09-2022 16:28, Dennis Burgess via Qgis-user wrote:
> How can I speed up Intersects?  Right now I have a single geometry 
> file, but then have about 2 million points that I need to understand 
> what intersects that geometry.  Right now its taking 3 days?  
> QGIS-bin.exe is only using 11% CPU.. ☹
> 
> Dennis
> 
> 
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