Re: [talk-au] Project of the Week / Month

[David Murn]

On Fri, 2010-11-05 at 12:33 +1100, Andrew Harvey wrote:

 Like putting a way down the middle of each lane and then tieing that
 back to the road, or like just adding a lane:n:feature = value to the
 existing road way? Then you could do something like lane:0:restriction
 = rightturnonly.

The problem with lane:n:feature, is say youre approaching traffic lights
and you have a right-turn light with a long slip lane and a short left
turn lane to avoid the lights, how do you tag this?  When you go from
lanes=2 to lanes=3, how does a renderer know which side the extra lane
is on?

If you have a 3-into-2 merge, how do you indicate which lane merges
easily?  Sometimes you might have a single slip-lane which joins a
2-lane road and becomes 3-lane.

Another possibility for this tag, is an extra lane for pick-up/set-down
at transport hubs or pull-in bus-stop lane, which doesnt have a barrier
to the main way.  In which case the lane might have psv tag or
something.

These are the sort of situations I think were being referred to as not
having a standard tagging method yet.

David


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[talk-au] Reversing the Mercator Effect....

[John Smith]

Stephen Von Worley has some fun reversing the distortions of the
Mercator projection, which exaggerates the size of things at the poles
in order to achieve consistent compass bearings. He imagines what
would happen if Greenland was on the equator and Africa in the Arctic,
and goes on to do the same thing with Alaska and Texas and with the
U.K. and Cuba. Freaky.

http://www.datapointed.net/2010/11/africa-greenland-mercator-map-distortion/

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