On 12.02.2010 12:01, Oliver Kuehn (skobbler) wrote: > Hi, > > 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. > > Regards, > Oliver > 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 imports....
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 introduced. _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
