Is there a python polyline decoder that keep the 3d information?

Samson · August 10, 2020, 3:46pm

I used the direction service to get the polyline with elevation. However, when I transformed it in points using the polyline module, the tuple containing the coordinate data doesn’t contain the elevation (only the x and y) and they are wrong. The polyline module works when elevation is false. I was wondering if there was a module that could fixe my problem or if someone had another solution to obtain only the points with the elevation from a direction request ?

Polyline : polyline · PyPI

I have also found a python version of a decoder for a 2d polyline but it have the seame problem with elevation. If someone knows how to modify it so that it accepts the elevation pls help me:

amandus · August 10, 2020, 3:54pm

Hi @Samson,

I’m not sure what you are refering to with the polyline module.
Best post a specific request you send and what you were expecting. (without api_key)

The openrouteservice-py package should be handeling your problems.
If you want to decode the polyline yourself take a look at these examples
Or the method in the openrouteservice-py package:

github.com

GIScience/openrouteservice-py/blob/3060a29784a4157b5f72ddbb39244a4100ddf7ef/openrouteservice/convert.py#L132


    :param arg: the object


    :param method: the method name
    :type method: string


    :rtype: bool
    """
    return hasattr(arg, method) and callable(getattr(arg, method))




def decode_polyline(polyline, is3d=False):
    """Decodes a Polyline string into a GeoJSON geometry.
    
    :param polyline: An encoded polyline, only the geometry.
    :type polyline: string
    
    :param is3d: Specifies if geometry contains Z component.
    :type is3d: boolean
    
    :returns: GeoJSON Linestring geometry
    :rtype: dict

Best regards

Samson · August 10, 2020, 7:57pm

You made my day !