Geometry Checks is slow when features count is enabled

[qgib]

Author Name: Alexey T (@Xeenych) Original Redmine Issue: 21533 Affected QGIS version: 3.6.0 Redmine category:digitising

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There is a new option in layer properties -> digitizing -> Geometry Checks.

When activated and also features count is enabled, it checks geometry for every feature in a layer after every singel vertex edit.

My layer have 20000 features. These checks are very slow.

Shouldn't this feature check geometry validity of a current feature being edited?

[qgib]

Author Name: Giovanni Manghi (@gioman)

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I have tested on a 4000 features layers, each with thousands of vertexes and does not seems to be an issue. Can you attach sample data? thanks.

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• status_id was changed from Open to Feedback

[qgib]

Author Name: Alexey T (@Xeenych)

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You are right. I found the cause.

When "show feature count" is enabled, layer editing is very slow. QGIS is recounting features after every vertex edit.

see the video https://yadi.sk/d/sFMsl3LclCerUA

Shouldn't it recount them on saving?

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• operating_system was changed from win7 to
• status_id was changed from Feedback to Open
• description was changed from There is a new option in layer properties -> digitizing -> Geometry Checks.

When activated, it checks geometry for every feature in a layer after every singel vertex edit.

My layer have 20000 features. These checks are very slow.

Shouldn't this feature check geometry validity of a current feature being edited? to There is a new option in layer properties -> digitizing -> Geometry Checks.

When activated and also features count is enabled, it checks geometry for every feature in a layer after every singel vertex edit.

My layer have 20000 features. These checks are very slow.

Shouldn't this feature check geometry validity of a current feature being edited?

• subject was changed from Layer properties -> Digitizing -> Geometry Checks is too slow to Geometry Checks is slow when features count is enabled

[Pedro-Murteira]

After testing with multiple datasets, I can still confirm that this issue occurs on layers with a considerable amount of features. Tested on a layer with 8000 features and this was not an issue at all. On the other hand, I also tested on a layer with 64000 features, and I could replicate this behaviour. As mentioned before on this issue, this is due to the fact that QGIS recounts features after every vertex edit. This counting could be done when saving the changes made to the layer instead. IMO this issue should be a Feature Request.