[Tagging] Highway property proposal "covered=yes"
rwtnospam-newsgp at yahoo.com
Thu Oct 29 22:02:52 GMT 2009
>On Wed, Oct 28, 2009 at 5:04 PM, Randy
><rwtnospam-newsgp at yahoo.com> wrote:
>>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.
>Would that be used for this:
>Currently mapped as:
>In this case there are four separate buildings (the two middle ones
>are shown in the image, and there are two others with smaller covered
I would say, yes. But, I'd also map the roof, so that the road wasn't just
dashed across the ground.
There needs to be a tag for this type of structure, and I haven't found
one. "building=shelter" would seem appropriate, but I think the Germans
have sewed that one up for camping shelters. Possibly just "building=roof"
would work (not my idea, someone else suggested it). If there is ever an
effort to map the multiple layers of a building, this could also be used
as the top layer. Or, for those who prefer not to differentiate building
type in the key value, "building=yes, [shelter=roof, level=roof, or
roof=yes]". I think level=roof, would lend itself to a better
generalization of building interiors. (other levels could be numbers, zero
not necessarily aligned to the exterior layer=0) But, this is all material
for a different thread, isn't it?
Meanwhile, back on subject, since there are two buildings and the roof
arching over the street is clearly not integral to either one, you could
map that with layers, only, with the roof over the road as layer=1 and the
road and buildings as layer=0 (default). But, you could also, in that
case, do the "forbidden", and add "covered=yes" to the road, to aid the
I use the quoted "forbidden", because I agree that we should map to
reality rather than for the renderers, but when we can add information
that still tracks reality, but can also aid the renderers, I believe that
is also appropriate. (However, I don't want to get into an ideology war on
Regarding your current mapping, I think that it is useful information to
tell the user that a road or pathway is covered, rather than just ignoring
it, since it can, for example, help a driver in planning where to drop off
or pickup a passenger, in inclement weather, or help a pedestrian to plan
a walking route to avoid the weather.
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