Re: [GRASS-user] Re: grass-user, , , , how to convert poly line as polygon....

Tue, 28 Sep 2010 00:54:08 -0700

On 28/09/2010 07:29, bharath s wrote:



hai,
           i have one map info (dxf ,mif) file ,which is a region , if i read from grass using v.in.ogr,   v.in.dxf  the boundary is coming as poly line not polygon (region )...please help me ,how can i convert the map as region using grass.......even i tried the shape file also ...
First check If the polylines are imported as closed boundaries with:
v.info -t
(Note the line "boundaries=...")
If you don't have closed boundaries, you'll have to do some cleaning to snap the nodes of the polylines together with v.clean ... tool=snap, etc.
Then just run:
v.centroids <polyline> out=<areas>
to add centroids to each closed boundary.


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Micha Silver
http://www.surfaces.co.il/
Arava Development Co.  +972-52-3665918

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