PTV Group - Logistics Forum

Posted: **Fri Nov 03, 2023 12:03 pm**

Hi there,

I recently faced several players who wanted to compute distance matrices / routings in xServer Internet 2 (test / prod) as quick as possible and who therefore parametrized their calls with the routing mode with an insufficient request like this one:

Code: Select all

{
  "startLocations": [
   .... 
  ],
  "destinationLocations": [],
  "storedProfile": "car",
  "distanceMatrixOptions": {
    "routingType": "HIGH_PERFORMANCE_ROUTING_WITH_FALLBACK_CONVENTIONAL"
  }
}

These players relied on the com.ptvgroup.xserver.routing.RoutingType to ensure the HPR usage.

But: in fact this is not sufficient!

Please take some time to understand the following mechanism:

Using that routing type tells the engine to look for a matching search graph: If the search is successful, the routing applies the HPR. If the search fails, the engine performs a fallback to CONVENTIONAL routing which is compareably slow.
Now many users are aware that we have standard graphs, e.g. for a car profile.
But what you need to understand is that ALL routing options have to match the graph and when we offer a "ZZ-EUR car with truck attributes" graph this means that the request above would need two inserts:
- The feature layer theme PTV_TruckAttributes has to be added and enabled.
- The geographic restriction to ZZ-EUR needs to be added.

So the following request returns a HPR based result and performance:

Code: Select all

{
  "startLocations": [
   .... 
  ],
  "destinationLocations": [],
  "storedProfile": "car",
  "requestProfile":{
     "featureLayerProfile":
        {   
           "themes":[
             {
                "id":"PTV_TruckAttributes",
                "enabled": true
             }
           ]
        }
  },
  "distanceMatrixOptions": {
    "routingType": "HIGH_PERFORMANCE_ROUTING_WITH_FALLBACK_CONVENTIONAL",
       "geographicRestrictions":{
          "allowedCountries": ["ZZ-EUR"]
    }
  }
}

Also check this article about Standard Search Graphs

Bernd

PTV Group - Logistics Forum

Request HPR driven routings / matrices in xServer2 Internet

Request HPR driven routings / matrices in xServer2 Internet