Long Distance Routing
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I don't know when this happened as I haven't tried long distance routing for a while but I noticed today that this is vastly improved. I (amongst others) have commented previously about the sometimes strange routes chosen when trying to route long distances and Mark suggested at the time that we may simply be asking too much of the devices. These routes would work but would be far from optimal i.e from Manchester to Cornwall would go through the middle of Manchester, on to the M6, off the M6 , through Birmingham, on to the M5, off the M5 through Bristol, onto the M5 again and then finally on to the destination. Today, however, when trying a similar route the given route was M60, M6, M5 with no deviations which to me is exactly the way I would travel. Additionally my 605 can now calculate routes to places further away than it previously could. As this is such an improvement and I missed it at the time I thought I'd drop a quick line to say thanks to whoever found the magic key. Cheers Paul
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Hi Paul,
I don't know when this happened as I haven't tried long distance routing for a while but I noticed today that this is vastly improved. I (amongst others) have commented previously about the sometimes strange routes chosen when trying to route long distances and Mark suggested at the time that we may simply be asking too much of the devices. These routes would work but would be far from optimal i.e from Manchester to Cornwall would go through the middle of Manchester, on to the M6, off the M6 , through Birmingham, on to the M5, off the M5 through Bristol, onto the M5 again and then finally on to the destination.
Today, however, when trying a similar route the given route was M60, M6, M5 with no deviations which to me is exactly the way I would travel. Additionally my 605 can now calculate routes to places further away than it previously could.
As this is such an improvement and I missed it at the time I thought I'd drop a quick line to say thanks to whoever found the magic key.
Thanks for the report, it's great that the routing is working well over long distances. I can't think of any obvious changes apart from the addition of the --remove-short-arcs stuff which would improve the routing if the maps contain short arcs. Oh yes, and there was also a fix to avoid problems with long arcs! So perhaps, that's what has made the difference. If only we could get a grip on the .MDR file format, it would make search work as well as the routing. Cheers, Mark
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On Wed, Jul 15, 2009 at 10:34 PM, Mark Burton<markb@ordern.com> wrote:
If only we could get a grip on the .MDR file format, it would make search work as well as the routing.
By the way, are you aware of the information here: http://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/MDR_Subfile_Format Or does this reflect the current state of our knowledge? Cheers.
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Hi
http://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/MDR_Subfile_Format
Or does this reflect the current state of our knowledge?
That is just a small amount of what we know. The file is however very large with many sections. What is known may be enough to get something working but I won't know until I or someone else tries it. ..Steve
participants (4)
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Clinton Gladstone
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Mark Burton
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Paul
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Steve Ratcliffe