[Tagging] trees and waterways

[John F. Eldredge]

What properties of a way do you look at to determine whether it was mapped in the proper direction?  Do you have to check whether the node IDs increase in the desired direction, or is there an easier way?  Also, if it turns out that part or all of a way was mapped in the wrong direction, what is the best way of correcting that direction, short of deleting the problem section and remapping it?

-------Original Email-------
Subject :Re: [Tagging] trees and waterways
From  :mailto:pdorange at mac.com
Date  :Sun Sep 12 11:29:11 America/Chicago 2010


Sam Vekemans
<acrosscanadatrails at gmail.com> wrote:

> For the Canada canvec dataset, the map feature is available, and
> direction of the way was not taken into account.  So the tag
> 'oneway=yes' was not used as a preset.

oneway=yes has nothing to do with river flow, oneway indicate a legal
issue for transport (in river case it can apply to segment of a river
that is allowed for boat only in oneway).

If we really need a tag to indicate river flow, it can't be oneway.
And if we define a tag for flow, how would you define the direction,
what would be the reference ?

--
Pierre-Alain Dorange
OSM experiences : <http://www.leretourdelautruche.com/map/>


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John F. Eldredge -- john at jfeldredge.com
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria