[GRASS-user] HowTo fix country border topology problem?

[Roger André]

Tried the v.extract route - it didn't help.  The little segments came
along.  So I decided to look at the original data and pull one the
polygons from it, to see if I could spot anything strange about it.  I
did find something, maybe, maybe one of the experts here can explain
it.

Here is what v.clean reports:

Number of nodes: 55
Number of primitives: 59
Number of points: 0
Number of lines: 0
Number of boundaries: 46
Number of centroids: 13
Number of areas: 13
Number of isles: 9

This country should have 9 areas, which matches the number of isles.
I'm trying to figure out how to remove the extra areas (rmarea thresh
value is tricky), but I wonder if there is a way to make the areas
match the isles?
--


On Fri, Oct 16, 2009 at 2:57 PM, Hamish <hamish_b at yahoo.com> wrote:
> Roger wrote:
>> Ok, well now I have a big dissolved
>> polygon with a bunch of small
>> unconnected lines inside of it.  I'd like to get rid
>> of the lines, and just have the external border left.
>>
>> Any ideas?
>
> v.extract type=area
>
> ?
>
>
> Hamish
>
>
>
>
>