[talk-au] Relations
Nick Hocking
nick.hocking at gmail.com
Tue Sep 9 13:40:03 BST 2008
Hi Liz,
OK - the JOSM relation editor is still a bit "beta-ish" so you have to type
all the info.
Here's an example
No right turn from a-street to b-road
key value
--- --------
:
type restriction : type of
relation
name No Right Turn: a-street to b-road : just a label - may be
shown on a map or a screen
restriction no_right_turn : may also be
no_u_turn no_left_turn etc
created_by JOSM
Role Occupied By
----- ------------------
from a-street : click on
a-street to poulate this
to b-street : click on
b-street to fill this in
via 1234567 (-35.1111, 150.1111) : click on ther
intersecting node for this one.
Therefore the ways called a-street and b-road and their intersecting node
are the members of this restriction type relation.
see -36.2078049, 150.1238405
--------------------------------------------------------
tying two bits of a way together into one entity (Tee-Place)
key value
----- --------
type street
name Tee Place
created_by JOSM
Role Occupied by
----- -----------------
Tee Place (4 nodes) : click on first bit of
Tee Place
Tee Place (7 nodes) : click on second bit of
Tee Place
Therefore the two "Tee Places" are linked together by a relation to form Tee
Place.
I don't know how this goes down with a search algorythm - which one of the
three does it find first?
They seen to work (using gosmore routing engine).
Cheers
Nick
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