[Tagging] New tag

Martin Koppenhoefer dieterdreist at gmail.com
Thu Jun 30 07:51:29 UTC 2016

2016-06-30 9:42 GMT+02:00 Andrew Errington <erringtona at gmail.com>:

> ref=* would be better, as it's already understood by a lot of other tools
> and renderers.

+1, also, ref is already referring to a number, so ref:store:num seems
unneccessarily complicated, so even if you should opt for a more structured
tag than "ref" you should likely use "ref:shop" and not "ref:shop:num".
(Another point: "num" sounds like "numeric", but maybe a shop ref goes
something like B45T, i.e. is alphanumeric).

I have looked at taginfo usage (worldwide). These are the current numbers:

ref=* and shop=* -- 10567
ref:shop:num       --     121
ref:shop               --        2

If you put a ref on a shop it is clear that the ref refers to the shop. If
it isn't clear where the ref refers to (e.g. a building, another business
or amenity etc.) there is something wrong with the mapping and it combines
several objects from the real world into one osm object. You should then
separate these objects because also other tags might be ambiguous (e.g.
name, wikipedia. start_date).

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