<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Hi there,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I hope this is the right place to ask this question:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><b>_What I want to do:_</b></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I am using the OSRM map-matching engine on custom data.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">To do this, I converted the data to an osm.xml file and import this data into OSRM (preprocessing).</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><b>_Unexpected behaviour:_</b></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I noticed, that OSRM uses new node IDs when the raw data contains very large IDs.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">To avoid this, I made sure the custom data only contains IDs up to 10 digits.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Now I am still seeing that for some nodes, new IDs are generated:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I.e. the IDs references in <span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif">"annotation":{"nodes":[...] do not exist in the raw osm.xml file.</span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif"><br></span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif"><b>_My question:_</b></span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif">Is there a way to find out, in which cases this happens and why?</span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif"><i>(e.g. some debug option which tells me "osm node id XXXX is too large / duplicated, generating new ID")</i></span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif"><i><br></i></span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif">Best Regards,</span></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><span style="color:rgb(0,0,0);white-space:pre-wrap;font-family:arial,sans-serif">Armin</span></div></div>