[GRASS-user] [GRASS-dev] how to make non-merged buffers?

[Markus Metz]

On Mon, Jun 3, 2013 at 1:08 AM, Hamish <hamish_b at yahoo.com> wrote:
> Michael wrote:
>> > Is there a way to create buffers around features that
>> > overlap when the features are near to each other instead of
>> > merging?
>
> Markus M wrote:
>> In GRASS 7, with v.buffer -t
>
> for the sake of completeness, in 6.3.0 you could do this with
> the debug= option, but that did not continue into the replacement
> 6.4 module. There you'd have to run it in a loop then combine with
> v.patch.

To be precise, the 6.3 debug= option as well as the v.patch solution
produce really overlapping areas with broken topology. The 7.0 -t flag
preserves the categories of the input features and cleans topology.
Areas in the output can have more categories, one for each input
feature in case of overlapping buffers. Thus you have clean topology
and you can extract single buffers. See the example in the 7.0 manual.

Markus M