[HOT] Anybody has time to handhold me through untangling a task?

john whelan jwhelan0112 at gmail.com
Tue Nov 22 19:29:18 UTC 2016

Aimed particularly at Majka.

I do a fair amount of validation.  I pulled in Tanzania recently and tagged
about a thousand untagged ways.  About another thousand buildings left as
area=yes.  So just doing very basic validation improves the map
enormously.  Given the size of the problem I wouldn't worry to much about
getting everything a perfect map.

Have a read through here:

I've updated it to give some sample messages I have used to give feedback.
Note I'm not the most tactful person but the idea is not to say you did it
wrong but that JOSM validation detected, the African Highway wiki
recommends etc. The reason for this is if you give positive feedback then
you get many more tiles out of the mappers.  So try to avoid invalidating
tiles unless its a mapathon when you get swamped by new mappers who will
only map once for the most part.  If you see a new mapper, <crtl>i and
lookup the name if its less than a month they're new, not mapping in a
mapathon then its well worth spending the time giving them feedback.
They'll probably map again.


Cheerio John

On 22 November 2016 at 10:36, Vao Matua <vaomatua at gmail.com> wrote:

> Henning,
> Thanks for helping out on this.
> I was quickly looking at the area in iD since the task was locked and the
> untagged features show up as lines.
> I saw that you had tagged the buildings.
> The path/track/unclassified issues here in Africa continue to be a
> challenge.
> Thanks again, East Africa needs lots of help.
> Emmor
> (Palolo)
> On Tue, Nov 22, 2016 at 6:01 PM, Henning Bolz <hebolz at web.de> wrote:
>> @Majka @Emmor
>> I had a short look on this tile and it is not looking that bad.
>> Settlements (landuse=residential) are nearly complete and mapped as i
>> would expect them. I removed some overlaps, some lonely buildings outside
>> res. areas are still missing.
>> Buildings inside res. areas can be considered complete, some huts were
>> not tagged. Some are not squared/rounded, that is more routine work to do.
>> @Emmor: What do you mean by "buildings mapped as lines" ?
>> Highways: some connections are still missing, the classification is NOT
>> following the africa highway tagging schema. In the north is a secondary
>> highway:
>> everything that branches from it into this tile large enough for a 4x4
>> AND connects res. areas     should be "unclassified". everything else is
>> probably "track", not many paths here in my opinion.
>> Waterways: difficult to distinguish from tracks. I added/completed two in
>> the SE corner.
>> Regards
>> Henning (hebolz)
>> *Gesendet:* Dienstag, 22. November 2016 um 14:50 Uhr
>> *Von:* "Vao Matua" <vaomatua at gmail.com>
>> *An:* majka <majka.zem+talk at gmail.com>
>> *Cc:* "HOT Openstreetmap" <hot at openstreetmap.org>
>> *Betreff:* Re: [HOT] Anybody has time to handhold me through untangling
>> a task?
>> Majka,
>> The mapping in this area is comparable to other projects I've seen in
>> Tanzania.
>> Over-mapping residential areas and paths is kind of overkill, but
>> personally I don't think it hurts to have them mapped.
>> The bigger concern I have is buildings mapped as lines, that is something
>> that should be mentioned to the mappers so they don't continue that habit.
>> It is always good to remind new mappers about the Africa tagging guide.
>> Thank you for taking on validation of some of these tiles, it can be
>> messy.
>> Regards,
>> Emmor
>> (Palolo)
>> On Tue, Nov 22, 2016 at 4:22 PM, majka <majka.zem+talk at gmail.com> wrote:
>>> Hello all. Not sure if this is the right place, but let's try it anyway.
>>> Could anybody find time to look at task http://tasks.hotosm.org/projec
>>> t/1788#task/91 and perhaps few tiles around it and guide me through
>>> sorting it out?
>>> I tried to validate it, but unlocked it again after correcting obvious
>>> errors. Furthermore, I don't expect newbies to untangle it.
>>> I think I see clearly water streams crisscrossing here, mapped as
>>> highways.
>>> What I see what should be corrected
>>> NE corner: highway:residential, streams as highway:path or
>>> highway:unclassified
>>> SE corner: disconnected stream, should be continued from the east tile
>>> to the south one
>>> few paths probably mapped too enthusiastically, almost non-existent in
>>> the imagery
>>> disconnect in the highway classification but first has to be the
>>> waterway/highway debate cleared
>>> residential areas: IMHO, too many. I would map probably 3 or 4 at all -
>>> small area NW, bigger area N to NE and one or two in the middle to the
>>> south.
>>> Anything else?
>>> Any tips how to map this part?
>>> There seems to be one way how to untangle the waterways - the stream in
>>> the NW corner (id:450387995) should be split in the south, and both parts
>>> are flowing to this point to the south there. And from there, it is one big
>>> maze...
>>> In this project, there are several similar tasks. Till now, I have
>>> chickened out every time, but it might be time to find my big girl breeches.
>>> Thanks,
>>> Majka
>>> _______________________________________________
>>> HOT mailing list
>>> HOT at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/hot
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