Error creating a new custom profile

Developers
1

Hello guys,

I’ve been trying to create a new custom profile for big trucks, but when I activate the profile and put the graphhopper to run, I got the following error log.

java.lang.IllegalArgumentException: Could not create weighting for profile: 'big_truck'.
Profile: name=big_truck|turn_costs={null}|weighting=custom|hints={custom_model_files=[big_truck.json], custom_model=distanceInfluence=null|headingPenalty=null|speedStatements=[{"if": "max_height < 4.5", "multiply_by": 0.5}, {"if": "max_weight < 40", "multiply_by": 0.5}, {"else": "null", "multiply_by": 1.0}]|priorityStatements=[{"if": "road_class == MOTORWAY", "multiply_by": 1.5}, {"if": "road_class == TRUNK", "multiply_by": 1.3}, {"if": "road_class == PRIMARY", "multiply_by": 1.2}, {"if": "max_width < 3 || max_height < 4", "multiply_by": 0.01}, {"if": "max_weight < 18", "multiply_by": 0.01}, {"else": "null", "multiply_by": 1.0}]|areas=[]}
Error: Cannot compile expression: The first block needs to contain a single unconditional 'if' statement (or end with an 'else').

Here’s my big_truck.json custom model:

    {
      "priority": [
          {
              "if": "road_class == MOTORWAY",
              "multiply_by": "1.5"
          },
          {
              "if": "road_class == TRUNK",
              "multiply_by": "1.3"
          },
          {
              "if": "road_class == PRIMARY",
              "multiply_by": "1.2"
          },
          {
              "if": "max_width < 3 || max_height < 4",
              "multiply_by": "0.01"
          },
          {
              "if": "max_weight < 18",
              "multiply_by": "0.01"
          },
          { 
              "else": "",
              "multiply_by": "1.0"
          }
      ],
      "speed": [
          {
              "if": "max_height < 4.5",
              "multiply_by": "0.5"
          },
          {
              "if": "max_weight < 40",
              "multiply_by": "0.5"
          },
          { 
              "else": "",
              "multiply_by": "1.0"
          }
      ]
    }

any ideia about whats been happening?

2

You need to limit the speed unconditionally. For example your first speed statement could be if: true, limit_to: 100, which would set the speed to 100 everywhere. You could also use the default car speeds like if: true: limit_to: car_average_speed, or a fraction of that like if: true, limit_to: car_average_speed * 0.9. But in any case you need to have one speed rule that applies everywhere.

1 Like
3

Hi @easbar ,

Thanks for your help. I updated the custom model file, and It worked as below

{
      "priority": [
          { 
              "if": "true",
              "limit_to": "car_average_speed * 0.9"
          },
          {
              "if": "road_class == MOTORWAY",
              "multiply_by": "1.5"
          },
          {
              "if": "road_class == TRUNK",
              "multiply_by": "1.3"
          },
          {
              "if": "road_class == PRIMARY",
              "multiply_by": "1.2"
          },
          {
              "if": "max_width < 3 || max_height < 4",
              "multiply_by": "0.01"
          },
          {
              "if": "max_weight < 18",
              "multiply_by": "0.01"
          },
          { 
              "else": "",
              "multiply_by": "1.0"
          }
      ],
      "speed": [
          { 
              "if": "true",
              "limit_to": "car_average_speed * 0.9"
          },
          {
              "if": "max_height < 4.5",
              "multiply_by": "0.5"
          },
          {
              "if": "max_weight < 40",
              "multiply_by": "0.5"
          },
          { 
              "else": "",
              "multiply_by": "1.0"
          }
      ]
    }

Do you have any consideration about this custom model?

4

The unconditional rule is only required for the “speed” section. For “priority” the default value is simply 1.

5

Unconditionally, you mean the else statement?

Another question, I was able to active the profile I need with LM profile. But when I try to request via browser using http://localhost:8080/maps/?point=-22.223605%2C-54.812498&point=-22.7865%2C-43.32339&profile=big_truck&layer=OpenStreetMap&ch.disable=true, I receive the following error:

Cannot find CH preparation for the requested profile: 'big_truck' You can try disabling CH using ch.disable=true available CH profiles: [car, truck]

I understood the LM is activated by default if I ‘disable’ ch (It was not actived BTW). Is that correct?

Any idea about it?

6

No I meant the if: true, limit_to: car_average_speed * 0.9. This is only required for speed, but not priority.

This is because the ch.disable=true option is not picked up from the url. You would have to modify the web UI code to add request options like this.