Hi, sorry for that blast from the past. My mailbox played a trick on me and I thought this was a current message!
Bye Frederik On 10.12.20 11:49, Frederik Ramm wrote: > Hi, > > On 13.05.20 23:14, Sasan Amini wrote: >> I am relatively new in using OSRM for map matching. I got my first >> results but there are two issues that I can't understand. My data has >> 130 rows (points) and in return, I get 150 points! > > I think you are approaching this with the wrong expectation. > > The map matching algorithm is not one that simply moves each of your > input points onto the output geometry and therefore has one output for > every input. > > Instead, the map matching algorithm tries to answer the question: What > is a valid route on the routing graph that is most likely the basis of > this input GPS track? > > This "most likely valid route" is then returned to you. It can have more > or fewer points than the input geometry; in fact matching input geometry > points to certain points on the output will be very difficult! > > Bye > Frederik > -- Frederik Ramm ## eMail frede...@remote.org ## N49°00'09" E008°23'33" _______________________________________________ OSRM-talk mailing list OSRM-talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/osrm-talk