[Historic] Temporal Tagging - old names

[Rob Warren]

I agree, the ability to tag items with previous names is desirable.  
What I was thinking is:

  <tag k="old_name" v="Emperor-Wilhelm-Street" end_date="1936"/>
  <tag k="old_name" v="Adolf-Hitler-Street" start_date ="1936"  
end_date="1945"/>
  <tag k="old_name" v="Karl-Marx-Street"  start_date ="1945"  
end_date="1990"/>
  <tag k="old_name" v="Emperor-Wilhelm-Street"  start_date ="1990" />

I realize that this requires a little bit more flexibility /  
documentation on the part of the mappers, but the above makes it  
perfectly clear to the renderer which label to use.

I like the slider idea too.

rhw

> Date: Mon, 21 Jan 2013 19:53:48 +0100
> From: Tim Alder <tim.alder at s2002.tu-chemnitz.de>
> Subject: Re: [Historic] Temporal Tagging  - old names
>
> There is also an other OSM-tag we should keep in mind.
> I mean key "old_name". We already have more than 50.000 of them in the
> database[1], but no real documentation for it.
> What I really miss in this feature is a solution for multiple old  
> names
> and the time span for it. For example we have in Germany a lot of
> Streets changed there name in this kind:
> Emperor-Wilhelm-Street -> Adolf-Hitler-Street -> Karl-Marx-Street  
> (East
> Germany) -> back to Emperor-Wilhelm-Street
> (...-1936)->(1936-1945)->(1945-1990)->(1990-...)
> For some changes we know exactly when it was but not for all.
>
>
(...)
>
> As a vision I see a map with a time-slider and all streets change  
> there
> names if I move the slider.
>
> Greetings Tim alias Kolossos
>
> [1]http://taginfo.openstreetmap.org/keys/old_name