OK, I’m a happy camper. prepare.minOnewayNetworkSize=800 seems to do the trick. One needs to rebuild the graph though; by looking at the code, it looks like it discards these non-reachable islands at graph building time, which is exactly what I need. Well done ! Any drawback to raising this value to large numbers ?
Laurent On 1 mars 2015, at 09:47, Laurent Bendel <[email protected]> wrote: > Peter, > yes, I think you’ve put the finger on the problem: my map has lots of small > ways that are not connected to the rest of the graph. So I think it actually > finds an edge to start off with, but then it can’t find a route because it’s > an island, although not a « oneway island », just an isolated island. So is > the config prepare.minOnewayNetworkSize although useful in this case ? > > In the SO issue you mention, it says that one should try to « decrease > prepare.minNetworkSize », is that correct or do you mean actually « increase > » the value ? and then should I recompile and rebuild the graph when I play > with this value or can I just restart the server ? > > Thanks, > Laurent > > On 28 févr. 2015, at 21:16, Peter <[email protected]> wrote: > >> The default settings should be already sufficient for ~1000m >> Maybe your start point is in a trap due to a barrier or similar? >> Maybe you try http://stackoverflow.com/a/26433076/194609 >> >> Kind Regards, >> Peter >> >> >> On 28.02.2015 17:27, Laurent Bendel wrote: >>> Hi all, >>> no answer, but I’ve found these two setting in config.properties, which I >>> changed as follows: >>> >>> index.highResolution=1000 >>> index.maxRegionSearch=8 >>> >>> But it doesn’t seem to help. First question is, do I need to recompile >>> after changing these two variables ? do I need to rebuild the graph ? well, >>> I did both anyway, but it still sometimes returns « point 0 not found » >>> when the coordinates is more than around 300-500m from the nearest road. Do >>> I need to change something else ? >>> >>> Thanks, >>> Laurent >>> >>> >>> On 23 févr. 2015, at 19:08, Laurent Bendel <[email protected]> wrote: >>> >>>> Hi all, >>>> I’m trying to find which option controls the max distance taken in account >>>> when looking up the closest edge for the start and end point given in a >>>> search. In some areas that are very poorly mapped, it’s sometimes possible >>>> to give a coordinate that is too far away from the closest road and the >>>> server returns an error. I’d like to increase this value. >>>> >>>> Thanks, >>>> Laurent >>>> >>> >> >> _______________________________________________ >> GraphHopper mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/graphhopper >
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