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I am new to QGIS and have done some research on this topic before posting but not sure I found an answer.

I have one feature that has multiple polygons (islands of a nation). In reality, there is only one island, but my file has split the island into two polygons. I have turned on editing mode and selected the nodes of the one island and moved the polygon so it is adjacent to the other polygon, but now I have a line down the middle.

Is there a way either merge the polygon into one, or remove the line down the middle or some other way of accomplishing this?

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    Welcome at StackExchange GIS! Have you tried to dissolve your polygons based upon that feature? Menu Vector->Geoprocessing Tools ->Dissolve – Kurt Feb 15 '15 at 18:46
  • If I understand your question correctly then this would do it. – BritishSteel Feb 15 '15 at 19:12
  • You could also look into Multiparts to singleparts (Vector > Geometry Tools > Multiparts to singleparts) – Joseph Feb 16 '15 at 10:19

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