[OSM-talk] Detrimental to the OSM database

[Mateusz Konieczny]

2014-08-23 9:56 GMT+02:00 Lester Caine <lester at lsces.co.uk>:

> On 23/08/14 04:43, Russ Nelson wrote:
> > I've checked these using surveys, and the
> > aerial photos are right, and the OSM (actually TIGER) data is
> > bad. Once you've edited a few hundred of these ways, you learn to
> > recognize one of these mis-digitized ways.
>
> The key perhaps here is that the source data is what was wrong. Had the
> material been 'armchair mapped' from the first, then many of these
> problems would not exist?
>
> I object to someone telling me that a road needs 'smoothing' ... it may
> well have very well mapped source data, and someone who does not know
> that will be stripping data simply because it does not follow the
> programmers arbitrarily defined rules.
>


And that is why it is checked by humans, using aerial imagery and not
changed by unsupervised software.

Armchair tracing roads from aerial images is really helpful, with rare
exception of well mapped areas with active community.
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