[Tagging] RFC - Feature Proposal - area of steps for pedestrians.

Martin Koppenhoefer dieterdreist at gmail.com
Fri Apr 12 00:06:08 UTC 2019

sent from a phone

> On 9. Apr 2019, at 17:42, Tobias Knerr <osm at tobias-knerr.de> wrote:
> - I'm not convinced that a relation (rather than an area:highway
> polygon) is necessary in typical cases. Usually, the most acute angles
> of the polygon mark the point where the bottom/top border is separated
> from the side border. It would seem sufficient to draw explicit lateral
> ways only in cases where that assumption doesn't hold.

indeed, the relation makes drawing lateral borders optional, but there will often be something that is mapped anyway, like a fence, a wall, a retaining wall etc.
> - Requiring the same number of nodes for the upper and lower way seems
> very fragile. It's unexpected that inserting nodes into a way (or
> removing them from a perfectly straight line) would invisibly break data.

it is just a suggestion but will only matter for step shapes that aren’t straight lines (interpolation may produce unexpected results in these cases.) It could be solvable but it will make it more difficult if there are different amounts of nodes 

Cheers, Martin 

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