A simple trick if you want to do start-via-via-...-via-end optimization like TSP is to use TSP and artificially set the distance between end and start locations to zero and this will keep those two city bound together. Then in the result just remove that link.

This will allow the same code that solves TSP round trip to also optimize the vis points between a start and end trip.

-Steve

On 7/6/2015 10:02 AM, Emil Tin wrote:


The OSRM team is working on a new API call to compute a round-trip that visits 
a list of point:

https://github.com/Project-OSRM/osrm-backend/tree/feature/round_trip


Med venlig hilsen

Emil Tin
IT- og Processpecialist
Trafik
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-----Oprindelig meddelelse-----
Fra: Hans Gregers Petersen [mailto:greg...@septima.dk]
Sendt: 6. juli 2015 15:55
Til: Mailing list to discuss Project OSRM
Emne: Re: [OSRM-talk] Route Optimizing

Hi Jonas,


Are there any ambitions to create something like an optimization for route 
stops?
And when not do you know any other way to do this via rest request?


If you are thinking of the TSP -
https://en.wikipedia.org/wiki/Travelling_salesman_problem - then it is a simple problem of "I 
need to visit X places after each other, please optimize the order to visit those places in". 
The solution is well-described in the WikiPedia link. You can write a little JavaScript, Python or 
whatever - and optimize on either distance or time. It is fairly simple, and all you use OSRM for 
is getting the costs. If you want as few calls to the OSRM-server as possible, then have a look at 
the "table"-service  ( 
https://github.com/Project-OSRM/osrm-backend/wiki/Server-api#available-services
)

Best regards,

Greg


Hans Gregers Petersen
Partner, Seniorkonsulent
greg...@septima.dk
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Septima P/S
Frederiksberggade 28, 2. tv.
1459 København K
www.septima.dk

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