[HOT] African Roads on Satelite

Sander Deryckere sanderd17 at gmail.com
Thu Jan 21 14:06:32 UTC 2016


The satellite images also differ a lot from region to region. In dry
regions, there are usually few trees, and you can easily see how wide a
road is. But in regions with lots of trees, the treetops often obscure part
of the road. So you might think from aerial imagery that it's only a
walking path, but in reality, there's a full-width road beneath the
treetops.

So it's hard to make a difference, but you can estimate some things from
guessing what should be reachable by car.

Regards,
Sander

2016-01-21 10:58 GMT+01:00 Paul Uithol <paul.uithol at hotosm.org>:

> Hi,
>
> Let me see if I can find a couple of good examples (combination of
> aerial/ground location) from the region where we're currently running a
> ground survey (eastern Uganda). Not seen anything like the motorway - the
> example looks pretty European.
>
> When in doubt, I usually tell our mappers to use `highway=unclassified` if
> it looks wide enough to allow regular traffic to pass (hopefully cars, at
> the very least motorbikes), and isn't a dead end.
>
> best,
> Paul
>
>
> On 21-01-2016 12:46, Hakuch wrote:
>
> Hi
>
> On 21.01.2016 02:38, Pierre BĂ©land wrote:
>
> what this Highway Tag Africa wiki page says is that you classify a road related to its importance.
>
> yes I got this point from the Wiki. Its just, when you are doing HOT
> mapping, you normally have just a satellite image. So on the ground
> photos of streets are helpful to get an impression of the situation on
> the ground, but it might also be much more helpful to see examples of
> satellite images.
>
> I know, the classification does not only depend from the road condition
> that I will see on the image. But it could help for some situations. The
> Link to the Bing Satellite picture was very helpful for example.
>
>
>
> _______________________________________________
> HOT mailing listHOT at openstreetmap.orghttps://lists.openstreetmap.org/listinfo/hot
>
>
> --
> Humanitarian OpenStreetMap Team
> Project Manager "Ramani Huria" (Dar es Salaam) & "Mapping Financial Services" (Uganda)
>
> Email: paul.uithol at hotosm.org
> Skype: paul.uithol
> NL:  +31 6 2423 7614
> TZ: +255 7 8546 2836
> UG: +256 7 8573 9853
>
>
> _______________________________________________
> HOT mailing list
> HOT at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20160121/8eebea0f/attachment.html>


More information about the HOT mailing list