On 21/07/12 21:21, Kai Krueger wrote: > On 07/21/2012 01:05 PM, Simone Cortesi wrote: >> Yes please, >> I would like to do the same too... >> >> -S >> >> On Sat, Jul 21, 2012 at 8:56 PM, Svavar Kjarrval <sva...@kjarrval.is> wrote: >>> 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 > > I have now pushed the code I used to generate those tables to github. > ( https://github.com/apmon/RoutingGrid ) > > It is a little java program that takes in a list of coordinates and > city names and generates the html file for the routing grid. > > You can easily run it on your own list of coordinates / cities. > > Dennis, who is responsible for the OSRM server, was OK with me running > the code against his server, and I suspect he wouldn't mind if others > do the same. > > It uses Google's directions API as a reference, so it is subject to > their terms. Currently they seem to allow 2500 requests per day, which > would correspond to a maximum sized grid of 50 cities. It can cache > the results from Google in a reference list, so you only need to query > google once per city list. > > Kai
Thanks a lot! I had an idea of a larger list of co-ordinates and could use this code to make a databased version. I'd probably have to host my own OSRM instance so I wouldn't bombard the main one with so many queries in a short time interval. It would be a kind of a quality assurance checker where I'd not only check links between cities/towns, but also links between some of the addresses inside them. Maybe add important POIs in the country as well. I really want the map to be of superior quality. - 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 >>> >>> _______________________________________________ >>> talk mailing list >>> talk@openstreetmap.org >>> http://lists.openstreetmap.org/listinfo/talk >>> > >
signature.asc
Description: OpenPGP digital signature
_______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk