[QGIS-trac] Re: [Quantum GIS] #1277: digitizing with snapping option works verry slow

[Quantum GIS]

#1277: digitizing with snapping option works verry slow
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        Reporter:  gespiel                           |         Owner:  nobody       
            Type:  bug                               |        Status:  new          
        Priority:  major: does not work as expected  |     Milestone:  Version 1.0.0
       Component:  Digitising                        |       Version:  HEAD         
      Resolution:                                    |      Keywords:               
Platform_version:  XP, sp2                           |      Platform:  All          
        Must_fix:  No                                |   Status_info:  0            
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Comment (by mhugent):

 The most effective way to speed up the snapping is to have a spatial
 index. Otherwise, every vertex of the whole dataset needs to be tested.

 Do you already have an index on the dataset? If not, you may create one in
 the vector layer properties dialog:

 Open vector layer properties dialog, go to tab 'general', press button
 named 'create spatial index'.

 Marco

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/1277#comment:4>
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