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 <iknowjos...@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 <jwhelan0...@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 >> >> _______________________________________________ >> HOT mailing list >> HOT@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/hot >> >> >
_______________________________________________ HOT mailing list HOT@openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
