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I’ve got a shapefile of Switzerland. Shown Polygons are 6-digit ZipCodes. Whenever I dissolve the file for example by 4-digit ZipCodes, it results in incorrect polygons.

enter image description here

Unfortunately some polygons borders aren't touching. If I zoom in on the orignal shapefile, it seems like there are empty spaces between the polygons.

Gap between polygons

I'm using QGIS and R and I've tried a lot. This is my first time using GIS data.

Vince
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Luxx
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  • There are processing tools for filling and deleting holes: http://gis.stackexchange.com/questions/164296/how-to-fill-holes-in-polygons-automatically – arabiccode Mar 10 '17 at 08:50

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