[Tagging] Highway property proposal "covered=yes"
mikh43 at googlemail.com
Thu Oct 29 08:58:30 GMT 2009
> -----Original Message-----
> From: tagging-bounces at openstreetmap.org
> [mailto:tagging-bounces at openstreetmap.org] On Behalf Of Randy
> Sent: 28 October 2009 21:04
> To: tagging at openstreetmap.org
> Subject: [Tagging] Highway property proposal "covered=yes"
> I have run into several situations where a service road
> extends under a covered area, such as a building.
> Layering is one way to tag the building/road system, but,
> technically, it is not always a correct way. Example: a
> building on the ground is at layer 0, associated with any
> pedestrian ways leading to it. That building has a small
> ground level footprint, a small shop, a stairway, and an elevator.
> The second floor (first floor to many) extends over a much
> larger area, and a service road/parking area is under that
> floor, open on three sides, therefore not a tunnel. The
> service road should also be at the same layer as the ground
> floor and the pedestrian ways. The second floor is
> contiguous, so separating the building into two pieces one at
> layer 0 and one at layer 1 is also misleading. Unless the
> building is mapped as a complex relation of stacked layers,
> there is no appropriate way, that I'm aware of, to map this
> situation. And, from aerial photography, it's guess work to
> map the hidden layers, anyway. GPS surveys can also be questionable.
> I propose that an additional property for highway of
> "covered=yes" be used for this and similar situations, where
> a road extends under a building, roof attached to a building, etc.
> In addition to providing a proper tagging method, there is an
> added benefit. There has been a continuing series of
> rendering bug reports about roads being on top of buildings
> rather than under them, independent of layering. This
> property tag would also make it much easier for renderers to
> render the way differently than on top of the building (or
> other structure), independent of rendering sequence. My
> proposed rendering would be parallel dashed lines with
> transparent fill, similar to a tunnel, without the
> entries/exits being drawn.
> Tagging mailing list
> Tagging at openstreetmap.org
More information about the Tagging