Tuesday, 8 May 2018

Cleaning polygon after using dissolve to repair geometry in QGIS?


I'm trying to obtain the boundaries of shapefile, thus to clean the inside as a matter of speaking. While I had expected that dissolve while get me a proper polygon, unfortunately it still has some remainders. How could I get rid of them?


Does QGIS have a tool similar to Repair Geometry?


Here's the source


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Result below:


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Answer



You can use grass, tool named v.clean. There, you set rmarea. The threshold parameter will be in unit of theme. All feature which have area less than treshold will be deleted.


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