[Qgis-user] gaps between polygons

kimaidou kimaidou at gmail.com
Thu Jul 25 12:19:24 PDT 2013


Hi

You can solve this sort of things automatically with grass tools via
Sextante. There is one tool (I cannot remember the name right now but will
check later) which let you choose a treshold in meters and automatically
merge the polygons.

Cheers
Michael


2013/7/25 aperi2007 <aperi2007 at gmail.com>

>  Is not so simple to resolve this.
>
> Firstly is necessary to understand what mean "fix the gap"
>
> There is several solutions:
>
> add several little polygons with all attributes set to NULL  to fill the
> gaps.
> Or add little polygons with specific attributes for this gaps.
> Otherwise move the vertex of polygon left to resolve the gap.
> Or move the vertex of polygon right to have the same result.
>
> And what is the limit so under it it is a gap and over it it is a correct
> isle ?
>
> And more probbly if you has some gap you could have some partial overlaps.
> You can render using only boundary to see if you has they.
>
> And what solution to resolve overlap ?
> clip the overlapped portion, split it in another third polygon, and so
> on...
>
> Just only to say that the solution is no easy.
>
> Regards,
>
> Andrea.
>
>
>
>
> On 25/07/2013 10:38, Starke Holger, Mag. wrote:
>
>  Hello,****
>
> ** **
>
> I have a polygon layer with several “gaps” between some features. I there
> a function to fix these gaps?****
>
> ** **
>
> Holger****
>
>
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