State of the Map 2007/Map Room 101

Map Room 101 was an interactive talk given by Steve Chilton at the State Of The Map 2007 conference. In a style similar to the Room 101 TV series, Steve ran through several different features and points of interest, asking whether they should be included in OpenStreetMap or not (by shouting IN or OUT).

Off-shore wind farms

The first feature up for discussion was off-shore wind farms (for example Barrow Offshore Wind). Steve noted that they are already marked on Ordanance Survey maps, as an area with a boundary representing a no-go area for boats.

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	power=wind_generator

Sometimes-visible island features

Lakes and reservoirs can sometimes feature islands which appear or disappear depending on the level of the water. The island might even have old man-made features on it, such as a church.

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN?
Possible tags	visible=sometimes :-)

Limestone pavements

See Limestone pavement on Wikipedia for an explanation.

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	tag the cracks? the paths?

Triangulation pillar (trig point)

Marked on OS maps.

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	man_made=survey_point

Angel of the North

Marked on OS map as a small circle, with path around it.

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	tourism=attraction Map the 'arms', or just the legs?

Causeways

eg Shell Island, Gwynedd

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags

Discussions:

• Proposed features/Water cover
• Proposed features/Causeway

Vertical ladders

eg Via Ferrata, Dolomites

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	no idea

Grand Canyon Skywalk

Only a small number of features of this type have been mapped, so article's tagging has not reached a consensus.

Consensus	IN
Possible tags	highway=footway But how to mark that it's not on the Canyon floor? (bridge=yes?)