AnsweredAssumed Answered

problems with DISSOLVE function when aggregating NEIGHBOUR POLYGONS

Question asked by geonetadmin on Sep 18, 2013
Latest reply on Sep 18, 2013 by geonetadmin
Original User: ElenaLZ

Hello everyone,

I have problems with the dissolve function.

I have a shapefile with multiple polygons, some are together and some are not. I want to use the dissolve function to create a new polygon shapefile where all adjacent polygons are aggregated into bigger polygons.

When I use the dissolve function it doesn't dissolve those polygons that only share a point with their neighbours.

A portion of my shapefile before the dissolve:

and after the dissolve

I think that the dissolve function doesn't understand that these polygons are also neighbours and, so, it creates two different polygons. Is there a way I can tell the dissolve function that those polygons are also neighbours?

Any help will be much appreciated.

Thank you.