Hi This is a general question about the current state of the maps. When we use our commercial road networks (OS Mastermap & Navteq) for road routing we tend to assume that the roads have been analysed for connectivity, that there are no one-way streets leading to dead ends, that you can't turn left off a flyover onto the road underneath and so forth). we also assume that there is only one link connecting two points if there is only one physical road link, and that all intersections are proper intersections.
We have written tools to address check these issues in the past (and clearly not all map makers have always addressed them internally). How suitable is OSM GB for routing, right now, with this level of detail? Do corresponding network analysis tools exist? I did try about 3 months ago to follow details for building a routable network using pgrouting and one of the programs in the chain seemed to do thousands of fixups to the data. If we did such an analysis (which would be quite a big investment) and came to the conclusion there were 10s of thousands of errors - which seems to be entirely possible - would there be any appetite in the community for fixing them? Certainly such an endeavour would be way beyond our budget. Tim -- Tim Pigden Optrak Distribution Software Limited +44 (0)1992 517100 http://www.linkedin.com/in/timpigden http://optrak.com Optrak Distribution Software Ltd is a limited company registered in England and Wales. Company Registration No. 2327613 Registered Offices: Orland House, Mead Lane, Hertford, SG13 7AT England This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Optrak Distribution Software Ltd. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error.
_______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
