[OSM-talk] [Tagging] Google has dual carriage way where it'snot built yet

Anthony osm at inbox.org
Sun Oct 11 00:35:24 BST 2009

On Sat, Oct 10, 2009 at 7:31 PM, Frederik Ramm <frederik at remote.org> wrote:
> Hi,
> Anthony wrote:
>>>> Even then, I have mixed feelings about it, until there's support in
>>>> the major editors for downloading and editing subsets of data.
>>> First of all, this would have to be supported by the API as well. And it
>>> is
>>> always very difficult because "everything's connected".
>> The usual solution is that items in different layers can't be connected,
>> right?
> That would be fatal; we do that all the time in OSM. In fact, OSM does not
> have different layers in the same way as traditional GISes have - in OSM,
> you define your layers when you take data out, instead of when you put data
> in.

That's my point though.  I'm not sure we should allow "proposed" or
"historical" data unless and until OSM supports the features of
traditional layers.  Perhaps there is a way to be smarter about it
(allow links between layers but warn when they are broken), but I'm
not so sure about even that.

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