[HOT] Connecting it all up

Joseph Reeves iknowjoseph at gmail.com
Fri Nov 3 13:14:15 UTC 2017


And then, with some serendipity, I saw this:

https://twitter.com/tjukanov/status/924625046248787968
https://medium.com/@tjukanov/animated-routes-with-qgis-9377c1f16021

Which is not as I was proposing, but similar,

Cheers, Joseph



On 3 November 2017 at 12:51, Joseph Reeves <iknowjoseph at gmail.com> wrote:

> Hi John,
>
> I like things like this; I'm not sure if I've got anything useful for you,
> but happy to talk about it. I think that routing would be a good place to
> start testing.
>
> For example, in 2009 OSM reported that it was a 7298 km drive from Cape
> Town to the Kenya / Ehtiopia border. In 2010 this was reduced to 6666 km:
> http://blogs.thehumanjourney.net/finds/entry/route_finding_across_a_
> continent
>
> Now it comes back as 6051 km: http://www.openstreetmap.org/
> directions?engine=graphhopper_car&route=-33.9157%2C18.4257%
> 3B3.5190%2C39.0547#map=4/-22.55/19.42
>
> According to OSM, the driving distance is roughly 17% less today than in
> 2009; I would imagine that the reduction in distance represents both the
> building of new physical infrastructure and an improvement in OSM data.
>
> Routing is a really easy way to look for problems in OSM, such as:
> https://twitter.com/iknowjoseph/status/567719622070525953
>
> So if you're interested in specific areas, I would suggest creating a
> route and looking to improve mapping along it.
>
> Long term, we could think of ways to conduct this analysis more
> systemically. I would like to experiment with something along the lines of:
>
>
>    1. Daily dump of OSM's Africa data
>    2. Create 100 start points and 100 end points
>    3. Daily create routes from each start to each end point
>    4. Log / graph distance of each route
>    5. Display each route on a map, coloured by change in daily route
>    distance
>
>
> Does anyone have a spare server? :)
>
> Cheers, Joseph
>
>
>
> On 2 November 2017 at 21:27, john whelan <jwhelan0112 at gmail.com> wrote:
>
>> If you look at many parts of the map in Africa you can see squares of
>> activity.  Often HOT projects but there are many many places where a
>> tertiary or higher classified highway is fifty meters or less from
>> connecting to another highway.
>>
>> I seem to recall in Ghana they had a project to just map the major
>> highways.  This is pure infrastructure, it isn't exciting like mapping
>> buildings but I suspect it would make the map a lot more usable if we could
>> connect up a few more highways and I'm not even sure how you could detect
>> them.
>>
>> Thoughts?
>>
>> Thanks John
>>
>> _______________________________________________
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>>
>>
>
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