[Tagging] The actual use of the level tag

[Eugene Alvin Villar]

On Sun, Jan 20, 2019, 9:50 PM Tobias Zwick <osm at westnordost.de wrote:

> Region                        | likely zero-based | likely one-based
> ------------------------------|-------------------|-----------------
> Washington, Philadelphia, NY  |         3         |        2
> Silicon valley, Los Angeles   |         4         |        4
> Quebec, Montreal, Ottawa      |         6         |        0
> Moscow                        |        23         |       51
> Tokyo                         |        14         |       16
> Seoul                         |         0         |        2
> Bangkok                       |         8         |        5
> ------------------------------|-------------------|-----------------
>
> For comparison:
> whole Phillipines             |        23         |        4
> whole Netherlands             |        11         |        2
> Berlin                        |        19         |        2
>
> *likely zero-based: there was at least one shop tagged with level=0
> *likely one-based: there was no shop tagged with level=0 but shops at at
>                    least two different other levels
>

A note: the Philippines is actually a one-based system (first floor =
ground floor) because our economy follows the U.S. as a result of being a
territory of the U.S. before and during WWII. The fact that you get more
zero-based level=* tagging in OSM for the Philippines is because of mappers
like me who actually do read the wiki and inform other new mappers of OSM's
system.

>
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