[HOT] Highway=track

john whelan jwhelan0112 at gmail.com
Thu Dec 28 18:11:41 UTC 2017


Note to Robert I think you have to divide the mapping into parts.  The
first is simple instructions that mappers can follow.  In HOT in particular
we have a huge turnover of mappers and I think for the most part new
mappers look at the options presented in iD and chose, I won't say randomly
but it can be close sometimes.

So basically stage one is get something mapped.  Hopefully with a tag that
is roughly correct.  The African highway wiki is a good guideline for
this.  Note you can opt out of the African highway mapping guideline but
armchair mappers they are used to it so might prefer to map elsewhere if
its something else to learn.

Stage two is tag the untagged ways.  Currently there are some 1,063
untagged ways in Uganda, most will be highways and 785 untagged with
comments so probably the majority are area=yes.  A ten percent sample of
Uganda gave 870? duplicate buildings so a rough estimate might be 8,700
duplicate buildings.  I have been working on reducing the number of
untagged ways in Uganda but these are the number remaining as of today.
There will be roughly 2,000 crossing highways selecting
unclassified/residential and above.

Stage three is the local mappers who are the technical authority for
tagging make decisions about tags.  As Frederik Ramm has mentioned it is a
balancing act between respecting the local mappers desires and making sure
it works with the larger infrastructure.  So if you want to use OSMand to
see where the highways are you'd better make sure that it displays the tag
you want at the zoom level you'd like.  Since service highways are normally
considered not terribly important you may find that they only show up when
zoomed in.  So you you have the freedom to choose but there are
implications.

Stage four local mappers clean up the highway tags to those you think are
appropriate.

Cheerio John


On 27 December 2017 at 13:15, Rupert Allan <rupert.allan at hotosm.org> wrote:

> Dear All,
>
> We are following this discussion on Highways with interest in Uganda. I am
> awaiting further input on 'service roads' from Uganda Bureau of Statistics
> and other national and regional bodies with many years of experience, and
> we are also learning through community field mapping on the ground.
>
> Meanwhile, Re. 'Humanitarian Presets in OSM':
>
> The immediate reaction to the idea of custom presets for HOT is, I think
> positive. Input from HOT_Uganda is that in large refugee settlements, there
> are admin levels which have some conflicting tags, for instance a village
> has become the term at admin level 4 which signifies a whole area of
> settlement, around what was initially one village, but has now become a
> huge camp with sometimes hundreds of thousands of people. In Uganda,
> villages all have related borders, so in rural areas you cannot be 'outside
> of a village'  (you would be in the next village if you crossed the
> 'border' as it were).
>
> So they can be huge in terms of population. If they are designated a
> 'Refugee Community' (RC) Settlement, they then get divided into Zones,
> sometimes Points, Blocks and sometimes 'Tanks' (N.G.O. Water Tanks) -
> although there is an instance right now where the tanks are being taken
> away, as the water provision becomes piped. I am awaiting feedback on what
> convention the community will adopt.
>
> Anyway, this differs completely from the national system, (Local
> Council/LC), where admin levels run: 'District, (County), Subcounty,
> Parish, Village'. We survey both, and have a divide in our survey, with a
> different set of questions/name choice tags which we are evolving as we
> work. We would appreciate making sure these refugee conventions merge with
> other specifically humanitarian conventions in other contexts around the
> world.
> N.B. Even within these North Uganda settlements, addressing changes from
> one settlement to the next, sometimes even when settlements are
> neighbouring.
>
> I shall post some more information and some kind of table on the Wiki, as
> things unfold here, but the main point is that 'Yes, certain
> Humanitarian-Specific tags would be most useful to us'.
>
> Best wishes,
>
>
> Rupert
>
> On Wed, Dec 27, 2017 at 4:53 PM, john whelan <jwhelan0112 at gmail.com>
> wrote:
>
>> The first comment is It looks reasonable to me but I'm not the technical
>> authority on this one.  Pierre might be better.
>>
>> Second comment is we can invoke a special preset with iD when opened by
>> Task Manager.
>>
>> Realistically the mappers we want to nudge most are those who only map
>> once and have very little interest in instructions or web pages.  You can
>> tell I'm feeling cynical today.
>>
>> We might do better to come up with a preset for iD that is better suited
>> for new mappers. ie drop living_street and footway as options for Africa.
>>
>> Cheerio John
>>
>> On 27 December 2017 at 07:44, Bjoern Hassler <bjohas+mw at gmail.com> wrote:
>>
>>> Hi John, dear friends,
>>>
>>> Just to add that we've been collecting road mapping tips (and other
>>> goodies) here on Google slides (in the HOT drive):
>>> http://bjohas.de/go/mmintro (see p. 65).
>>>
>>> We've said this:
>>>
>>>
>>>    -
>>>
>>>    Can it be passed by a vehicle? → unclassified (or better) /
>>>    residential / track (not path)
>>>    -
>>>
>>>    Does it connect distinct villages/areas where people live (running
>>>    between and through villages)? → Unclassified or better (not residential
>>>    / not track)
>>>    -
>>>
>>>    Does the road only run within a village or residential area (not a
>>>    through-road) → residential
>>>    -
>>>
>>>    Does the road only run to fields (agric. use)? → track
>>>    -
>>>
>>>    Is it not passable by car (4x4)? → path
>>>
>>> Note: A metal roof arrives by vehicle → roads to houses with metal
>>> roofs are unclassified or residential (not path).
>>>
>>> Do you all agree?
>>> Bjoern
>>>
>>> On 21 Dec 2017 15:44, "john whelan" <jwhelan0112 at gmail.com> wrote:
>>>
>>> It's come up in the OSMand mailing list that these aren't shown at
>>> higher zoom levels. Whilst mapping specifically just for the rendering
>>> system is frowned on in this case it is supported by the wiki.
>>>
>>> If it connects settlements then according to
>>>
>>> http://wiki.openstreetmap.org/wiki/Highway_Tag_Africa
>>>
>>> it is not a track.
>>>
>>> unclassified or minor road surface unpaved is a reasonable default.
>>>
>>> Cheerio John
>>>
>>> _______________________________________________
>>> HOT mailing list
>>> HOT at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/hot
>>>
>>>
>>>
>>
>> _______________________________________________
>> HOT mailing list
>> HOT at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/hot
>>
>>
>
>
> --
> Rupert Allan
> Country Manager - Uganda
> E-Mail: rupert.allan at hotosm.org
> East Africa: +256 792 297795 <+256%20792%20297795>/+256777656999
> <+256%20777%20656999>
> UK: +44 7970 540 647 <+44%207970%20540647>
> Skype: Reuben Molotov
> Web/Blog: www.rupertallan.com
> HF Radio Call-Sign: 24VN3
>
> Humanitarian OpenStreetMap Team
> Using OpenStreetMap for Humanitarian Response & Economic Development
> web | twitter | facebook | donate
>
> Help us #mapthedifference by Dec. 31
> web | twitter | facebook | don
>
>
> Missing Maps is a field-derived Humanitarian Disaster Management project,
> empowered by Humanitarian OpenStreetMap, Medecins-Sans-Frontieres, and
> British and American Red Cross. It depends on the digital revolution to
> empower people within their own communities to take control of how they are
> represented, mapped, and seen by the outside world.
> The project finds its heart not in the technology or tools it uses, or
> commercially interested organisations backing it, but on the Open Street
> Map itself, the publicly owned wiki-style platform, accessible to anyone
> via Smartphone or Computer, to edit, use or develop. It is a transparent,
> cost-neutral project by which donors can engage and collaborate with their
> field counterparts, giving time rather than money to support the production
> of commonly owned visualisations from satellite and field data. This
> enables the delivery of humanitarian assistance in the form of engineering,
> medical, and cultural intervention in areas generally considered
> 'inaccessible' and 'precarious'.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20171228/3e25038f/attachment.html>


More information about the HOT mailing list