Hello Frederik, You just block this user SNAPPING for the reason that he did not comment the source of its data. He is making a general control over the buildings, but maybe he should not put this comment = " Bâti ENEO" ?
I confirm that the buildings were digitized from mabpbox satellite imagery during a cartoparty (last 18 days). As I said in my mails earlier, I met here in Yaoundé the various contributors and normally there will be no more such massive import without communication. No one's interest to have an unusable database. I will be grateful to unlock his account (SNAPPING) so that we continue here the control operations. Regards, Willy OSM Cameroun [image: cid:image001.gif@01CE6E7A.4B7BE7C0] *SOGEFIWilly Franck SOB – Développeur territorial international* *rue de Mélen, à côté de l’hôtel « la Résidence » YAOUNDÉ* *Tél. (+237) 94 69 86 07 / * *(+237) 50 02 24 74* *Courriel : **w...@sogefi-sig.com* <w...@sogefi-sig.com>* Site Web : * *www.sogefi-sig.com* <http://www.sogefi-sig.com/> 2016-02-04 15:37 GMT+01:00 Sander Deryckere <sander...@gmail.com>: > > I don't think this was "mapped" from aerial imagery. The data is too > gridded and strange to map it easily with any editor we have. So it is at > least exported from some other format (perhaps shapefile). > > I assume it's derived from height measurements (where some people classify > different heights in a different way, as can be seen by the strange > transitions between data). But it could also be something that recognises > colour. > > @Frederic, yes, I know it's a massive task. That's also why I didn't dare > starting it (it would dirty the data, and you probably have better > knowledge on tools to revert it easier when the data is clean). Thank you > so much for helping with this. > > Regards, > Sander > > 2016-02-04 14:10 GMT+01:00 Jean-Guilhem Cailton <j...@arkemie.com>: > >> Hi Frederik, >> >> Here is something I kind of remember from a recent thread on a OSM list, >> about mapping in Africa - even if it was in another country, that could >> explain what you observed: before going into the field to collect ground >> data for mapping individual buildings, some teams first map roughly the >> residential blobs from satellite imagery, to then have some positioning >> references when they'll be in the field. >> >> Best regards, >> >> Jean-Guilhem >> >> >> Le 04/02/2016 07:47, Frederik Ramm a écrit : >> > Hi, >> > >> > the revert is still ongoing; it is a *lot* of data. -- There are >> > other strange aspects of mapping in that area, for example these >> > residential blobs look auto-generated somehow: >> > >> > http://www.openstreetmap.org/way/394572178#map=17/5.44332/10.34317 >> > >> > also if you look closely you'll find that buildings have been traced by >> > someone other than the person adding the residential blobs, but >> > buildings are sometimes inside, sometimes outside the residential blobs, >> > and nobody seems to have cared to adapt the residential blob to where >> > the buildings are. >> > >> > Bye >> > Frederik >> > >> >> >> -- >> "On ne m’ôtera pas de l’idée que, pendant la dernière guerre mondiale, >> de nombreux juifs ont eu une attitude carrément hostile à l’égard du >> régime nazi." Pierre Desproges >> "I won't be deprived of the idea that, during the last world war, many >> Jews had a downright hostile attitude toward the Nazi regime." >> >> _______________________________________________ >> HOT mailing list >> HOT@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/hot >> > >
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