Markus Metz-3 wrote > On Sun, Oct 22, 2017 at 10:51 PM, Helmut Kudrnovsky <
> hellik@ > > wrote: >> >> >That explains a lot of the errors. Thus I should import only one of >the >> site types A, B, C at a time, e.g. v.in.ogr where="SITETYPE='A'", >>correct? >> >> yes >> >> >Unfortunately, with the example I mentioned, the two overlapping >>polygons >> are both of site type B, suggesting that the update of the >database did > not >> remove the old entry >> >> sites of the same type shouldn't overlap, these are artefacts of >> different >> data sources over Europe compiled in a not "cleaned" data set > > In this case, the user has to decide what is correct. Both polygons have > the same "RELEASE_DA: 2017-01-30", no way to decide which one is newer. >> >> I'm aware that not all of these issues could/should be "automagically" >> solved during import, some precision errors/self intersection/.... >> correction would be nice :-) > > v.in.ogr can fix precision errors with a suitable value for snapping. > Areas > that are too small to be considered valid areas can be removed with > v.clean > tool=rmarea. For everything else, as in the example above, the user must > decide what is correct and what not. > > In short, software "a" can fix errors created by software "b", but most > often only humans can fix human errors. In the end, human decision about > what is correct and what not is needed. Regarding the problem with > Natura2000, I am pretty sure that someone added a certain site and that > same person, and/or another one doing cross-checking, did not notice that > there is an earlier version of that site, maybe with a different name but > same location. > > Markus M >> >> >> >> ----- >> best regards >> Helmut >> -- >> Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html >> _______________________________________________ >> grass-user mailing list >> > [email protected] >> https://lists.osgeo.org/mailman/listinfo/grass-user > > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user I agree with you all above. :-) I'm in exchange with EEA as data provider to improve this nice data set. Could you send me off-list your example site mentioned above, then I will forward the issue to the data provider. ----- best regards Helmut -- Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
