<div dir="ltr">Hi François,<br><div><br></div><div> The small component behaviour happens when a section of the graph is disconnected from the rest. I can think of a few possible reasons you're seeing this:</div><div><br></div><div> 1. Your road isn't actually connected</div><div> 2. Turn restrictions or one-ways are preventing access to both ends of the road</div><div> 3. Your map is really small - by default, isolated groups of <1000 nodes are flagged as separate "small components". If your total map is <1000 nodes, then you'll probably get the whole thing flagged. You can adjust by passing the `--small-component-size` parameter to `osrm-extract`. Setting it to `--small-component-size 0` will mean that no roads are marked as small, and snapping will all be to the nearest neighbour.</div><div><br></div><div>If you use 3, note that it won't fix connectivity problems - even though using `--small-component-size` will change what is used to snap, if there is actually no route to a location (and the small component analysis is indicating that there may not be), you will get `NoRoute` API responses.</div><div><br></div><div>daniel</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 26, 2018 at 9:46 AM, François Lacombe <span dir="ltr"><<a href="mailto:fl.infosreseaux@gmail.com" target="_blank">fl.infosreseaux@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"><div><div><div><div><div><div><div><div><div><div><div><div><div><div>Hi,<br><br></div>As mentionned in the mail title, OSRM 5.14.3 is defining kilometers long ways as small which are seen with a purple casing in the debug view.<br></div>I read this view may be buggy, and I don't see those ways in small layer of standard osrm-frontend.<br><br></div>Nevertheless, osrm-routed won't use the path, despite it has a really good speed and rate.<br></div>My profile was written from scratch, I can't publish it actually and I'm not allowed to publish a data extract (part of my client dataset)<br><br></div>Furthermore, I have similar ways, with same weight, rate and speed which aren't seen as small and used by the routing engine really well.<br><br></div>Here are the properties I get from process_way lua function :<br></div>forward_mode = 3 (mode.walking)<br></div>format_access = nil (both routable and not routable ways, should I have another value here?)<br></div>weight = -1<br></div>rate = 5<br></div>speed = 45 (prefered path use rate=0.6 + speed = 0.1 ways)<br><br></div>Is there any additionnal value I should watch to find why OSRM says I have small elements ?<br><br><br></div>Any input is welcome regarding this issue, all the best<span class="HOEnZb"><font color="#888888"><br><br></font></span></div><span class="HOEnZb"><font color="#888888">François<br></font></span></div>
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