Re: [talk-au] Historical rail lines

[John Smith]

historic tags aren't meant to be used to historical things in general,
but things like old railway lines still in use but for tourists.

On 26 November 2012 13:18, Ian Sergeant <inas6...@gmail.com> wrote:
> On 26 November 2012 12:36, Alex Sims <al...@softgrow.com> wrote:
>
>>
>> I've been following this discussion with interest. We do mark and should
>> mark administrative boundaries which are not visible on the ground. Can the
>> logic for these boundaries which be usefully extended to historical data?
>
>
> I don't think so. Keeping historical data in OSM is going to require a more
> complex model. Maybe a separate project, maybe layers, maybe something
> else.
>
> There is a mailing list and a wiki page set up to gather ideas..
>
> http://lists.openstreetmap.org/pipermail/historic
>
> There are two main aspects to consider here. Firstly, how you map that what
> no longer exists? Secondly, how you track changes made to OSM, so you can
> capture history within the OSM changesets.
>
> The first one we have plenty of time.
>
> The second we need right now, every addition I make it is impossible to tell
> whether I'm adding a new feature that didn't exist on the ground before, or
> just filling in a feature that has always existed but wasn't mapped. And
> every feature I remove, it is impossible to tell if I'm removing it before
> it is wrong, or removing it because it has been demolished. So, we're
> actually losing information as we go.
>
> Ian.
>
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