[QGIS-trac] Re: [Quantum GIS] #3126: Sliver holes remain after dissolve

[Quantum GIS]

#3126: Sliver holes remain after dissolve
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        Reporter:  gislab                            |         Owner:  jef          
            Type:  bug                               |        Status:  closed       
        Priority:  major: does not work as expected  |     Milestone:  Version 1.6.0
       Component:  Vectors                           |       Version:               
      Resolution:  invalid                           |      Keywords:               
Platform_version:                                    |      Platform:  Windows      
        Must_fix:  No                                |   Status_info:  0            
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Changes (by lutra):

  * status:  new => closed
  * resolution:  => invalid


Comment:

 Replying to [comment:4 gislab]:
 > I don't have grass.
 >



 Ok. Try Install it and import your vector, you'll see that the it is
 really unclean in origin, for this reason you cannot expect that the
 dissolve tool to fix the slivers (because is not its function), nor you
 can expect a clean dissolve of the vector because as is clear, it is not
 topologically correct.


 After importing it in GRASS you'll have the original vector in 3 layers:
 the correct polygons, the slivers/holes, and the overlapping areas.

 I'll attach them all to this ticket.

 If you want to do a dissolve of your vector you'll have to:

 import it in GRASS, apply one or more v.clean modules in order to remove
 slivers and then export it.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/3126#comment:5>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats