Filter OpenStreetMap edges on `Surface` type

Question

I'm accessing OpenStreetMap data using osmnx, using:

import osmnx as ox

graph = ox.graph_from_place('Bennekom')
nodes, edges = ox.graph_to_gdfs(graph)

I know from openstreetmap.org/edit that all (?) street features have an attribute Surface, which can be Unpaved, Asphalt, Gravel, et cetera. However, that info is not included in the GeoDataFrames, so I cannot filter or select certain surface types. Is that somehow possible?

Answer 1

You need to include the surface key in the useful_tags_way :

import osmnx as ox

ox.settings.useful_tags_way = ["surface"] # << add this line

graph = ox.graph_from_place("Bennekom")
nodes, edges = ox.graph_to_gdfs(graph)

NB: You might need to explode the surface column in order to get all matches when filtering.

print(
    edges.iloc[:, :-1]
    .sample(frac=1, random_state=111)
    .to_string(max_rows=10, max_cols=5, index=False)
)

                  osmid                  surface  oneway reversed  length
  [1213295165, 6920271] [paving_stones, asphalt]   False     True  34.747
                6920805                  asphalt   False     True  69.793
              189224820                  asphalt   False     True  21.313
              701436450                      NaN   False    False  14.168
                6920602            paving_stones   False    False  67.469
                    ...                      ...     ...      ...     ...
[1281296947, 604729524]                  asphalt   False     True  92.612
              173209511                      NaN   False     True  84.315
              604729512                      NaN   False     True 157.071
              857498475                      NaN   False    False  17.064
              365986402                      NaN   False     True  14.977