Use spatial index to check fewer features in QGIS Actions Buffer example

[spatialthoughts]

Use spatial index to check fewer features in QGIS Actions Buffer example

[kannes]

Ah and this would also save deselection (even if no selection) and resulting map redrawing, takes a while if the project is complex:

if nearby_features:
    polygon_layer.selectByIds(nearby_features)

from courses.

[kannes]

Performance test with roads and buildings from Noorth-Brabant shapefiles from https://download.geofabrik.de/europe/netherlands.html

• Without the rectangle: ~22 seconds for collecting the IDs
• With the rectangle: 0.5 seconds for collecting the IDs

:O

[spatialthoughts]

THank you for this. It's very helpful and spatial index makes a big difference for large datasets.

I just updated the code. 48848ea

Will push out the update to the data package and website soon.

[kannes]

Happy to help! Your tutorials continue to be an amazing inspiration.