[OSM-talk] source=(survey, yahoo, gps...)

[Donald Allwright]

>If there are 10 traces by GPS for a way & I think it's out of alignment from the average of them, then I would move it.
>Irrelevant of what the source tag for the way.

Please don't do this unless you have clear evidence it's wrong, you could well be messing up perfectly accurate data.

What if all 10 people walked down the same side of a wide street, and made an estimate of the necessary offset of the centre line? In this case you'd be messing up data that were already accurate. Unless you take your own GPS trace, you can't be sure if that's happened or not. I have in the past done this and walked across the street at one point in order to get a reference for the width, then added a deliberate offset accordingly. Not all roads are easily walkable on both sides, so this is not an unlikely scenario.

Donald



      
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