[OSM-talk] What3words

[Martin Koppenhoefer]

2015-11-22 15:32 GMT+01:00 Colin Smale <colin.smale at xs4all.nl>:

> You argument about being able to derive the w3w from the geometry is
> valid, but requires the use of the proprietary API. But as you mention
> their resolution is 3m, and I have seen discussions where people point out
> that their house falls into multiple squares so there is not a single
> translation from a building to w3w. ...
>
By the way, just to be absolutely clear, I am not thinking of w3w as a
> coordinate system in OSM, but as an addressing attribute similar to
> postcodes.
>


it clearly is a coordinate system and not an addressing system. Addresses
adopt to the requirements, this system doesn't. Addresses are unique (at
least in the areas I know), this system can't guarantee it. If there are 2
doors side to side falling into the same grid square 3x3, they will get the
same "address" (coordinates) in w3w, despite having actually distinct
addresses (this is how addressing works in Italy, one address for every
entrace).


cheers,
Martin
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