How to route inside a given country or countries?

[Bernd Welter]

Hi there,

I've been asked whether it is possible to ensure a routing track stays within specific countries, for example "Germany only" or "Germany+Austria".

Yes we can: sample created with xServer2 (PTV cloud services):
Left map: Route takes direct way through the state of Virginia (418km)
Right map: Virginia is on the blacklist and therefore a large detour is taken (1'600km)

This is possible with the following approaches:

• If you work with profile snippets check this snippet - this also works with xTour (please consider the complete process!):

  Code: Select all

  <?xml version="1.0" encoding="UTF-8"?>
  <Profile>
      <Routing majorVersion="2" minorVersion="0">
              <Algorithm>
                  <GeographicRestrictions>
                      <AllowedCountry countryCode="49"></AllowedCountry>
                  </GeographicRestrictions>
              </Algorithm>
          </Routing>
      </Profile>

• xRoute1: use the RoutingOption.ROUTING_COUNTRIES : A list of countries to use exclusively in route calculation (*)
  The list has to be described as a string of comma separated values. Legal values are either PTV numbers (IU) or ISO2 or ISO3 codes: integration unit codes. Please note that ISO codes do not work for Russia, Australia, the United States and Canada.
  BENEFIT: easy to access - DISADVANTAGE: Doesn't work with xTour
• xRoute2: com.ptvgroup.xserver.routing.GeographicRestrictions

Both routes connect the German cities Saarbrücken and Freiburg.
Left map: route invalid because it leaves the country
Right map: route limited to Germany, detour

Feel free to get back to me in case of questions,

Bernd