How to add a new encoded value

Open Source Routing Engine
1

Hi,

On my car.json profile i want a new value “Timeband” how can i read this value out of the .json so its useable in the code?

car.json

{
“distance_influence”: 15,
“time_band”: “w1”,
“priority”: [
{
“if”: “road_access==DESTINATION||road_access==PRIVATE”,
“multiply_by”: “0.1”
},
{
“if”: “road_class==SERVICE||road_class==TRACK”,
“multiply_by”: “0.5”
}

],
“speed”: [
{
“if”: “true”,
“limit_to”: “car_average_speed”
}
]
}

graph.encoded_values: car_access, car_average_speed, road_access, road_class, time_band

Error:

Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field “time_band” (class com.graphhopper.util.CustomModel), not marked as ignorable (5 known properties: “distance_influence”, “heading_penalty”, “areas”, “speed”, “priority”])

Thanks,
Brandon

2

This is rather complex and you’ll need to modify the CustomModel class and also the CustomWeighting and/or CustomWeightingParser to consider it.

It is recommended that you use it directly speed and priority statements as encoded value.

3

Hi,

Do you have an example of how i can use my new “time_band” directly in the priority/speed array, encoded value?

My end goal is that i can define the time_band in the profile, and at the Weighting level have this data to influence which weighting value i use.

To note, there is no road data which is called “time_band” its a made up name just for the sake of identification and doesn’t related to any road segments, etc.

“priority”: [
{ “if” : “time_band == 1”, “multiply_by”: “0”
]

Thanks,
Brandon

4

Just add it to the profile, not the custom_model. Then it will be available in com.graphhopper.config.Profile#getHints().

1 Like
6

Hi,

Thanks for the reply, bit of confusion.

How do i access my profile name/hints in the Weighting class.

So i just add it below name: to be directly in the profile and not the custom_model?

image
image403×135 8.03 KB

Thanks,
Brandon