[GRASS-user] serious problem with "ROUND-OFF"

Hamish hamish_b at yahoo.com
Thu Oct 1 13:41:16 EDT 2009


achim wrote:
> thanks for your suggestions. It is very useful to get ideas
> from a different perspective!
> 
> I am sorry, that I have to write a 'but' again:

Hamish:
> > > r.to.vect the area
> ..I have no areas to extract. I have a river network, for
> which I want to subdivide some lines.
> Because I have some thousands of lines, I always get some
> start/end-nodes on these critical points on the border
> between two
> raster-cells.
> 
> > add cats to boundaries with v.category
> > v.type the boundary to line
> > v.extract the lines
> > v.buffer the lines to about the cell width
> > v.overlay op=not

sorry I was thinking of a screenshot posted in the last days
to remove a boundary which touched the side of a polygon with
that.

glad you fixed it with r.what.


Hamish



      


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