[QGIS-trac] Re: [Quantum GIS] #2546: Singleparts to multipart makes non valid geometries

[Quantum GIS]

#2546: Singleparts to multipart makes non valid geometries
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   Reporter:  dr                                |              Owner:  cfarmer      
       Type:  enhancement                       |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.6.0
  Component:  Python plugins and bindings       |            Version:  Trunk        
   Keywords:                                    |   Platform_version:               
   Platform:  All                               |           Must_fix:  No           
Status_info:  0                                 |  
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Comment(by cfarmer):

 This has been (partially) addressed in r14744. I am unsure whether valid
 single part polygons should be able to be joined to create an invalid
 multi part polygon. I have been unable to determine from an extensive web
 search, whether this should be allowed or not? Any thoughts? In any case,
 a warning is now issued if the output layer contains invalid multi part
 geometries.

 Carson

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/2546#comment:3>
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