<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<br>
<body bgcolor="#FFFFFF" text="#000000">
Hi ZhiQiang,<br>
<br>
yes, according to the wiki this is wrongly mapped:<br>
<i> Avoid tagging highway intersections as that does not make clear
which way has the impediment.
</i><br>
<br>
<a class="moz-txt-link-freetext" href="http://wiki.openstreetmap.org/wiki/Tag:barrier%3Dgate">http://wiki.openstreetmap.org/wiki/Tag:barrier%3Dgate</a><br>
<br>
Peter<br>
<br>
<div class="moz-cite-prefix">On 23.07.2015 23:16, John Zhao wrote:<br>
</div>
<blockquote
cite="mid:CA+EBg9S3pCXMqRhygBXt0LRX3rWw4cOfzdcOjCriOFckCf3NNA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Peter,
<div><br>
</div>
<div>Maybe the following one related with <a
moz-do-not-send="true"
href="https://github.com/graphhopper/graphhopper/issues/388#issuecomment-88066385">https://github.com/graphhopper/graphhopper/issues/388#issuecomment-88066385</a> </div>
<div><br>
</div>
<div>
<div style="font-size:12.8000001907349px">I have a look
at 37.32611992939085,-121.9961998312816.</div>
<div style="font-size:12.8000001907349px">It seesm related
with barrier=gate at intersection.</div>
<div style="font-size:12.8000001907349px"><a
moz-do-not-send="true"
href="http://www.openstreetmap.org/node/1126492194"
target="_blank">http://www.openstreetmap.org/node/1126492194</a></div>
</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature"><b>Best Regards,</b>
<div><b>ZhiQiang ZHAO</b></div>
</div>
</div>
<br>
<div class="gmail_quote">On Thu, Jul 23, 2015 at 2:11 PM, Peter
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:graphhopper@gmx.de" target="_blank">graphhopper@gmx.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"> <br>
<div bgcolor="#FFFFFF" text="#000000"> 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.<br>
<br>
Regards,<br>
Peter
<div>
<div class="h5"><br>
<br>
<div>On 23.07.2015 23:03, John Zhao wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div dir="ltr">Interesting,
<div>when I increase <span
style="font-size:12.8000001907349px">minOnewayNetworkSize
from 20 to 50, the following two disappeared.</span></div>
<div>
<div style="font-size:12.8000001907349px">subnetwork
start from:
37.32611992939085,-121.9961998312816 size: 24</div>
<div style="font-size:12.8000001907349px"><span
style="font-size:12.8000001907349px">subnetwork
start from: 37.78373608999855,-122.</span><span
style="font-size:12.8000001907349px">25065187925067
size: 34</span></div>
</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div><b>Best Regards,</b>
<div><b>ZhiQiang ZHAO</b></div>
</div>
</div>
<br>
<div class="gmail_quote">On Thu, Jul 23, 2015 at
1:55 PM, John Zhao <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:johnthu@gmail.com"
target="_blank">johnthu@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I tried car flag encoder with following
parameter on San Francisco bay area data
from mapzen.</div>
<div><a moz-do-not-send="true"
href="https://s3.amazonaws.com/metro-extracts.mapzen.com/san-francisco-bay_california.osm.pbf"
target="_blank">https://s3.amazonaws.com/metro-extracts.mapzen.com/san-francisco-bay_california.osm.pbf</a></div>
<div><br>
</div>
<div>
<div>minNetworkSize=200</div>
<div>minOnewayNetworkSize=20</div>
<div><br>
</div>
<div>I printed all the remaining
subnetworks.</div>
<div>
<div>edges: 591932, nodes 437420, there
were 3496 subnetworks. removed them
=> 13121 less nodes. Remaining
subnetworks:5</div>
<div>The remaining subnetworks are:</div>
<div>subnetwork start from:
37.32611992939085,-121.9961998312816
size: 24</div>
<div>subnetwork start from:
37.56018439442332,-122.30257814308803
size: 436637</div>
<div>subnetwork start from:
37.78373608999855,-122.25065187925067
size: 34</div>
<div>subnetwork start from:
38.180185962770565,-121.70631393878864
size: 301</div>
<div>subnetwork start from:
37.85717050411933,-122.07633641532816
size: 424</div>
</div>
<div><br>
</div>
<div>I don't understand why there is still
subnetwork less than 200 nodes.</div>
<div><br>
</div>
<div>I have a look
at 37.32611992939085,-121.9961998312816.</div>
<div>It seesm related with barrier=gate at
intersection.</div>
<div><a moz-do-not-send="true"
href="http://www.openstreetmap.org/node/1126492194"
target="_blank">http://www.openstreetmap.org/node/1126492194</a><br>
</div>
<div><br>
</div>
<div>
<div>
<div><b>Best Regards,</b>
<div><b>ZhiQiang ZHAO</b></div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</div>
</blockquote>
<br>
</body>
</html>