[talk-au] The trouble with tracing

Cameron osm-mailing-lists at justcameron.com
Tue Jan 20 14:10:37 GMT 2009


However OSM is not only used for routing. It can also be used for printed
maps, or as an index to locate a street (eg. search for Portrush Road near
Heathpool.) For these purposes yahoo traced data is infinitely more useful
than no data.

~Cameron

2009/1/21 Nick Hocking <nick.hocking at gmail.com>

> Good tracing is quite helpful in the final definition of a way,
>
> Bad tracing is really bad  - it takes a multiple of the original effort to
> correct it.
>
> Ok - having resolved that, I believe that the difference between good
> mapping and bad
> mapping will be absolutely correlated to the number of "one way" errors and
> "turn restriction" errors.
>
>
> In order to say that a route from Street A to Street B is possible you must
> have actually done it yourself.
> It's not good enough to have just passed along a nearby cross street, to
> snaffle the street sign name.
>
> For entitys that need to be routable, you *must* actually travel that route
> to verify it's correctness.
>
> PS - you can't read a "No Right Turn" sign from a satellite and you're not
> allowed to use Google Steet Views.
>
> _______________________________________________
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> Talk-au at openstreetmap.org
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>
>
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