I want to make a similar routing table file for my country. Any chance of giving us instructions on how to generate such routing grids of our own?
- Svavar Kjarrval On 21/07/12 18:32, Kai Krueger wrote: > Hello everyone, > > Inspired by the US 250 cities routing grid[1] used in the original TIGER > cleanup in 2009, I have now created a similar routing grid for the USA > and Australia. > > Australia: http://apmon.dev.openstreetmap.org/aus_routing_grid.html > USA: http://apmon.dev.openstreetmap.org/us_routing_grid.html > > It takes the top cities of the country and calculates the routing > distances between them and displays the result in a routing grid. It > allows to check the top tear inter city road network. Unusually long > routes are likely caused by broken data and indicates where things need > fixing. > > In the grid, all routes that are more than 5% longer or slower than > expected* are show in red, otherwise they are considered as > superficially OK. The reference values are in brackets. If you click on > the link, you will be sent to the detailed routing information. > > Unfortunately the situation, particularly in Australia, is pretty bad. > In Australlia currently non of the routes between the top ten cities > pass this criterion and in fact most of the routes can't be calculated > at all any more due to disconnectedness of the road network. > > So for all those who are finished remapping their own area and are > looking to help with a bit of armchair mapping, trying to get more of > these routes green could be a good idea for arm chair mappers. Let's see > how quickly we can get all of them green! > > The routing information is calculated using the Open Source Routing > Machine ( http://map.project-osrm.org/ ) and if I am not mistaken, > updates its data once a day. I will equally try and recreate those grids > on a daily basis to help track progress on the remapping. > > Happy remapping, > > Kai > > * The time and distance that is expected is currently determined using > google's directions API. Although not perfect by any means, it is > probably the most reliable source for now as a reference. > > > > [1] http://wiki.openstreetmap.org/wiki/TIGER_fixup/250_cities/routing_grid > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk
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