Functions
def	filter_xodr (input_file, output_file, road_ids_to_keep)

Variables
dictionary	road_ids_to_keep = {"23"}

string	input_file = "original_map.xodr"

string	output_file = "filtered_map.xodr"

Detailed Description

Purpose:
This script filters an .xodr map file to retain only a specified subset of roads based on their IDs.

Key Features:

- Allows user to define a set of road IDs to keep (road_ids_to_keep).
- Removes all roads and junctions not associated with the specified IDs.
- Outputs a new .xodr file containing only the filtered elements.

Use Case:
Creating a trimmed-down version of a map with only selected road segments for focused simulation or testing.

Function Documentation

◆ filter_xodr()

def filter_roads.filter_xodr	(	input_file,
		output_file,
		road_ids_to_keep
	)

Definition at line 24 of file filter_roads.py.

def filter_xodr(input_file, output_file, road_ids_to_keep):
    tree = etree.parse(input_file)
    root = tree.getroot()
 
    # Remove roads not in the list
    for road in root.findall("road"):
        if road.get("id") not in road_ids_to_keep:
            root.remove(road)
 
    # Remove unrelated junctions
    for junction in root.findall("junction"):
        remove = True
        for connection in junction.findall("connection"):
            if (connection.get("incomingRoad") in road_ids_to_keep or
                connection.get("connectingRoad") in road_ids_to_keep):
                remove = False
                break
        if remove:
            root.remove(junction)
 
    # Write the result to output
    tree.write(output_file, pretty_print=True, xml_declaration=True, encoding='UTF-8')
    print(f"Filtered XODR written to: {output_file}")
 
# === Run the filter ===

References filter_xodr().

Referenced by filter_xodr().

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Variable Documentation

◆ input_file

string filter_roads.input_file = "original_map.xodr"

Definition at line 21 of file filter_roads.py.

◆ output_file

string filter_roads.output_file = "filtered_map.xodr"

Definition at line 22 of file filter_roads.py.

◆ road_ids_to_keep

dictionary filter_roads.road_ids_to_keep = {"23"}

Definition at line 17 of file filter_roads.py.

Functions