I think this is the solution you wanted. You were not clear about
doing this with the GRASS Tools plugin in qgis, but your followup
question on watershed creation seems to indicate that is your desire.
To aid in getting useful recommendations, please be more specific in
your requests, including the operating system, version of qgis, and
anything else that is pertinent, like using GRASS Tools.
Regards,
John
On Feb 16, 2009, at 2:47 PM, G. Allegri wrote:
is there any autocomplete
for a line to create polygons from lines to adjacent polygon.
In GRASS you can use:
# v.type in=input_lines out=output_boundary type=line,boundary
and then add centroids to the created boundaries with something like
(I'm going with memory, you should check the command syntax):
# v.centroids input=output_boundary output=output_polygon option=add
Obviously you have to check the topology results at then end. It's up
to you to have a consitent starting line vector (closed arcs, islands,
etc.), otherwise you will have to correct it with the usual commands
(v.clean, vlbuild, etc.)
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