[HOT] landuse=residential and routing problems

[john whelan]

Echoing Pierre's comments should we come up with better instructions?  I
think the requirements for the NGOs are where do people live and how do we
get there?

Which suggests we want the settlements and a highway to reach them.

This is probably different to normal OSM which sometimes seems to be map
everything in sight.

Personally I think there are two styles of mapping a settlement.  One
tightly maps round the buildings the other is looser in nature and maps
groups of buildings more loosely.  Both have advantages.  Tight mapping
means you can get a rough approximation of population without mapping every
building.

Mapping fewer highways would let us cover a larger area for the same amount
of effort but how to describe the optimum mix is difficult.

Cheerio John

On 31 Jul 2017 3:40 pm, "Vao Matua" <vaomatua at gmail.com> wrote:

> Interesting situation Marco, one I've often seen in Ethiopia.
> I would suggest that creating "virtual" roads is not a good idea.
>
> The purpose of routing software is to help someone navigate the real
> world. If someone were to try to drive an imaginary route it would cause
> problems. Additionally I find it hard to imagine a scenario where someone
> would use a routing app to go 100 meters through a village.
>
> The paths you have mapped are fine, but the key thing is to map the route
> to the next village or highway=unclassified+.
>
> Emmor
>
> On Mon, Jul 31, 2017 at 10:22 AM, mbranco2 <mbranco2 at gmail.com> wrote:
>
>> Thank you all for your answers, and for your hints not to map too much
>> detailed.
>>
>> For my question, the key seems to be: "roads must share a node to let the
>> routing software calculate...".
>>
>> A lot of times I find situations like this one [1]: there are no roads
>> connecting the highway from NW and the highway from SE, but I think routing
>> sw must know the two highways are connectable...
>>
>> So, I'm undestanding that sometimes it could be necessary to draw
>> "virtual" roads around or inside a village, to connect between them several
>> external roads (of course, if it seems appropriate, looking at the aerial
>> images).
>> If so, maybe it could be suitable to put a note (if not a specific tag),
>> indicating that segment as "virtual"?
>>
>> Thank you again,
>> Marco
>>
>> [1] http://www.openstreetmap.org/#map=16/12.0527/14.4386
>>
>>
>>
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