Bug report #2552

digitizing become very slow when a (fair big) underlying vector has snapping activated

Added by Giovanni Manghi over 10 years ago. Updated over 9 years ago.

Status:Closed
Priority:Low
Assignee:nobody -
Category:Vectors
Affected QGIS version: Regression?:No
Operating System:All Easy fix?:No
Pull Request or Patch supplied: Resolution:worksforme
Crashes QGIS or corrupts data: Copied to github as #:12612

Description

I believe that this is replicable with a sample data of yours, but in case you are not able to reproduce just ask and I'll attach a sample.

Steps:

add a polygon layer, with a fair big number of features and enable snapping for it.

then add another polygon layer or create a new one.

start editing the new polygon layer, you'll notice that the "capture polygon" tool is pretty slow. Depending on how big is the underlying layer it can be almost unusable.

remove the snapping for the underlying layer and editing the new polygon will work just fine

tested under trunk/1.4 under both linux and windows

History

#1 Updated by Gerhard Spieles over 10 years ago

Create a spatial index on the big layer and it works fine (Layer properities, General, Button "Create Spatial Image".
see ticket #1277

#2 Updated by Jürgen Fischer over 9 years ago

  • Resolution set to worksforme
  • Status changed from Open to Closed

Replying to [comment:1 gespiel]:

Create a spatial index on the big layer and it works fine (Layer properities, General, Button "Create Spatial Image".
see ticket #1277

sounds like a solution.

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