[OSM-talk] [OSM-legal-talk] Are we strict enough with imports ?
extremecarver at googlemail.com
Fri Feb 12 18:22:48 GMT 2010
On 12.02.2010 12:01, Oliver Kuehn (skobbler) wrote:
> Another helpful feature could be an "expiry date". Each import can not be
> valid longer than e.g. 12 months. After this period the dataset needs update
> and receives a new validity data. Otherwise the data will become inactive.
It would be nice to be able to tell if imports are used or not. Sadly
this is not the case. If we removed untouched objects from the Austrian
plan.at import, then we would surely break even more, because people
connected other streets to the imported data, without correcting the
In general I think data that is easily recordable/traceable shouldn't be
imported. So streets and their like should have very low priority. In
the US I think the Tiger Import is at least partly responsible for the
low interest (it's more fun to enter something new, than to correct old
stuff). Austria had before the imports actually a on par or better
coverage than Germany. Then with plan.at imports virtually 80% of all
roads were inside OSM - but with very low quality. 15 month later
Austria really lacks in quantity and quality compared to Germany, and
still IMHO around 30-40% of the Imports are more or less incorrect. I
think it will take another year or two to recover the damage and get
down to 3-5% uncorrected import data.
If however we had high-resolution orthophotos cleaning up the import
would be largely over and only very few bits and pieces would be left
over and the import probably by now considered as a success.
On the other hand data that is very hard to source, like maybe exact
postal codes, drains, small rivers, detailed data about landuse (as
imported in France and Latvia) that without - or even with - good
resolution orthophotos cannot be mapped, lower quality could be accepted
because we stand a hard chance of ever getting it otherwise.
I think the rule, if it is easily mapable (no matter the effort and
probability of it being done), then we should be a lot stricter and make
sure that the quality of the import is at least as good as good mapping
practice allows (Tiger Data is IMHO not good enough quality for
example). If however it is not easily mapable then imports can be
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