2009/7/30 "Marc Schütz" <[email protected]>: >> this might be a logical topic: we are mapping the center of the road. >> The tunnel can not end at the center of the crossing road, because >> this road itself is not a tunnel. (you will have at least half the >> width of the crossing road untunneled). > > No, IMO we're mapping the entire road, but represent it by a line located at > the middle. This is a subtile but important difference;
yes, I agree with this, but it doesn't IMHO extend the tunnels beyond their real extension. I personally wouldn't think: "the tunnel starts right at the crossing and therefore I map it like this", but I would rather think: "the tunnel starts at this projected point that is half the width of the crossing road away". > otherwise we wouldn't connect the incoming ways at a crossing, because they > end at the edge of the road, not in the middle. why not? Who tells you that the road ends at the edge and not in the middle? If both roads continue on both ends, would you say that the center (crossing) belongs to neither road because they both end at the edge? I would say it belongs to both roads. cheers, Martin _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
