[HOT] landuse/cover import in Cameroon?

Willy Franck Sob willyfrancksob at gmail.com
Wed Feb 10 15:00:18 UTC 2016


Hello Frederik,


I see that the SNAPPING user account is still blocked. May I know what the
problem is your level?


Willy Franck SOB.
Président OSM Cameroun





[image: cid:image001.gif at 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 : **wfs at sogefi-sig.com* <wfs at sogefi-sig.com>* Site Web : *
*www.sogefi-sig.com* <http://www.sogefi-sig.com/>


2016-02-04 16:12 GMT+01:00 Willy Franck Sob <willyfrancksob at gmail.com>:

> 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 at 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 : **wfs at sogefi-sig.com* <wfs at sogefi-sig.com>* Site Web : *
> *www.sogefi-sig.com* <http://www.sogefi-sig.com/>
>
>
> 2016-02-04 15:37 GMT+01:00 Sander Deryckere <sanderd17 at 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 <jgc at 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 at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/hot
>>>
>>
>>
>
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