[talk-ch] vandalism under the pretense of "simplifying"

Sarah Hoffmann lonvia at denofr.de
Tue Jun 28 23:03:55 CEST 2022

On Tue, Jun 28, 2022 at 10:18:56PM +0200, RB wrote:
> That's the whole point. We clearly see a regression, untrue angles, etc
> because the user uses an simplifying tool (probably
> https://josm.openstreetmap.de/wiki/Help/Action/SimplifyWay ) instead of
> manually simplifying while staying as close to the ground truth as
> possible.  That's the whole point I am trying to make. Of course improving
> incorrect data is desirable. Of course achieving the same "truth" with
> fewer nodes is desirable.

Okay, so the user should not have used a global simplify but instead have
talked to you about why they think the mapping needs simplification.
Fair enough.

Now that we have cleared up this point, could we please talk about your
mapping? Could you please outline your process how exactly you decide
what counts as a landuse=forest and what doesn't? And how exactly do
you determine the forest outline to a precision of 1m. Do you have other
aerial imagery available that gives you better views of the forests than
the Swisstopo Aerials? Because I have a hard time to match the outlines I
see on those photos with the ones you map.


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