[Tagging] simple_brunnel : one node bridge like xing highway over waterway

Martin Koppenhoefer dieterdreist at gmail.com
Wed Apr 2 18:03:41 UTC 2014


2014-04-02 19:29 GMT+02:00 Mike Thompson <miketho16 at gmail.com>:

> 1) How much precision/accuracy?  No real world measurement or recording
> of such measurement is exactly precise/accurate. Do you use a commercial
> grade differential GPS when surveying?  When you are create a way to
> represent a road which in reality is an arc or curve, how many nodes do you
> use?  You could increase your precision by adding more nodes.



more than positional precision I try to achieve relative accuracy, e.g. the
position of a building in respect to another, the shape of something (e.g.
if the road is straight, I do not put intermediate points), if a feature is
linear I do not represent it as a node, etc.

cheers,
Martin
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