Hi ZhiQiang, yes, according to the wiki this is wrongly mapped: /Avoid tagging highway intersections as that does not make clear which way has the impediment. /
http://wiki.openstreetmap.org/wiki/Tag:barrier%3Dgate Peter On 23.07.2015 23:16, John Zhao wrote: > Hi Peter, > > Maybe the following one related > with > https://github.com/graphhopper/graphhopper/issues/388#issuecomment-88066385 > > I have a look at 37.32611992939085,-121.9961998312816. > It seesm related with barrier=gate at intersection. > http://www.openstreetmap.org/node/1126492194 > > *Best Regards,* > *ZhiQiang ZHAO* > > On Thu, Jul 23, 2015 at 2:11 PM, Peter <[email protected] > <mailto:[email protected]>> wrote: > > > There are two types of subnetworks and the smaller ones seems to > be 'one-way subnetworks' which means they are eg. only reachable > as destination or start. But if you would start from a > destination-only subnetwork you'll get 'not found' for all points > outside of this network. > > Regards, > Peter > > > On 23.07.2015 23:03, John Zhao wrote: >> Interesting, >> when I increase minOnewayNetworkSize from 20 to 50, the following >> two disappeared. >> subnetwork start from: 37.32611992939085,-121.9961998312816 size: 24 >> subnetwork start from: 37.78373608999855,-122.25065187925067 size: 34 >> >> *Best Regards,* >> *ZhiQiang ZHAO* >> >> On Thu, Jul 23, 2015 at 1:55 PM, John Zhao <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hi, >> >> I tried car flag encoder with following parameter on San >> Francisco bay area data from mapzen. >> >> https://s3.amazonaws.com/metro-extracts.mapzen.com/san-francisco-bay_california.osm.pbf >> >> minNetworkSize=200 >> minOnewayNetworkSize=20 >> >> I printed all the remaining subnetworks. >> edges: 591932, nodes 437420, there were 3496 subnetworks. >> removed them => 13121 less nodes. Remaining subnetworks:5 >> The remaining subnetworks are: >> subnetwork start from: 37.32611992939085,-121.9961998312816 >> size: 24 >> subnetwork start from: 37.56018439442332,-122.30257814308803 >> size: 436637 >> subnetwork start from: 37.78373608999855,-122.25065187925067 >> size: 34 >> subnetwork start from: 38.180185962770565,-121.70631393878864 >> size: 301 >> subnetwork start from: 37.85717050411933,-122.07633641532816 >> size: 424 >> >> I don't understand why there is still subnetwork less than >> 200 nodes. >> >> I have a look at 37.32611992939085,-121.9961998312816. >> It seesm related with barrier=gate at intersection. >> http://www.openstreetmap.org/node/1126492194 >> >> *Best Regards,* >> *ZhiQiang ZHAO* >> >>
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