Create lines instead of markers whenever necessary

app/preprocessing.py

@@ -1,4 +1,4 @@
-from folium import Map, Marker
+from folium import Map, Marker, PolyLine
 from pandas import DataFrame, json_normalize
 
 from app.data_request import request_dataset
@@ -15,12 +15,24 @@ def create_dataframe(dataset) -> DataFrame:
     return filtered_df
 
 
+def reverse_coordinates(row):
+    """
+    Reverses each tuples coordinates to ensure folium can parse them correctly
+    """
+    coord = [tuple(reversed(t)) for t in row["fields.geo_shape.coordinates"]]
+    return coord
+
+
 def create_map(df):
     """
-    Creates a Map with markers from the DataFrame
+    Creates a Map with markers or lines from the DataFrame
     """
-    m = Map(location=COORDINATES, zoom_start=12)
+    m = Map(location=COORDINATES, zoom_start=12, tiles="Stamen Terrain")
     for index, row in df.iterrows():
-        lng, lat = row["fields.geo_shape.coordinates"]
-        Marker(location=[lat, lng]).add_to(m)
+        if row["fields.geo_shape.type"] == "LineString":
+            coord = reverse_coordinates(row["fields.geo_shape.coordinates"])
+            PolyLine(locations=coord, color="blue", opacity=0.5).add_to(m)
+        else:
+            lng, lat = row["fields.geo_shape.coordinates"]
+            Marker(location=[lat, lng]).add_to(m)
     m.save("app/templates/map.html")