TF2_LOOKUP_001 ros2 runtime_error ai_generated true

tf2.BufferCore::lookupTransform: Can't find transform from 'base_link' to 'map', error: 'map' passed to lookupTransform argument target_frame does not exist

ID: ros2/tf2-buffer-core-transform-timeout

Also available as: JSON · Markdown · 中文
90%Fix Rate
87%Confidence
1Evidence
2023-11-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Humble active — — —
Iron active — — —
Jazzy active — — —
Rolling active — — —

Root Cause

The tf2 buffer does not have the requested transform due to a missing broadcaster, wrong frame name, or the transform not being published yet (e.g., robot_state_publisher not running or static_transform_publisher misconfigured).

generic

中文

tf2 缓冲区没有请求的变换，原因是缺少广播器、帧名称错误或变换尚未发布（例如 robot_state_publisher 未运行或 static_transform_publisher 配置错误）。

Official Documentation

https://docs.ros.org/en/humble/Tutorials/Intermediate/Tf2.html

Workarounds

  1. 90% success Ensure the static_transform_publisher for the 'map' to 'odom' frame is running in the launch file: <node pkg="tf2_ros" exec="static_transform_publisher" args="0 0 0 0 0 0 map odom"/> 
    Ensure the static_transform_publisher for the 'map' to 'odom' frame is running in the launch file: <node pkg="tf2_ros" exec="static_transform_publisher" args="0 0 0 0 0 0 map odom"/>
  2. 85% success Check the frame names in the URDF and ensure robot_state_publisher publishes the correct transforms: ros2 run robot_state_publisher robot_state_publisher --ros-args -p robot_description:="$(xacro my_robot.urdf.xacro)" 
    Check the frame names in the URDF and ensure robot_state_publisher publishes the correct transforms: ros2 run robot_state_publisher robot_state_publisher --ros-args -p robot_description:="$(xacro my_robot.urdf.xacro)"
  3. 80% success Add a transform listener with a retry loop and a timeout of 2 seconds, logging the available frames for debugging: try: transform = tf_buffer.lookup_transform('map', 'base_link', rclpy.time.Time(), timeout=rclpy.duration.Duration(seconds=2.0)); except tf2.LookupException: self.get_logger().info('Available frames: ' + str(tf_buffer.all_frames_as_string())) 
    Add a transform listener with a retry loop and a timeout of 2 seconds, logging the available frames for debugging: try: transform = tf_buffer.lookup_transform('map', 'base_link', rclpy.time.Time(), timeout=rclpy.duration.Duration(seconds=2.0)); except tf2.LookupException: self.get_logger().info('Available frames: ' + str(tf_buffer.all_frames_as_string()))

中文步骤

  1. Ensure the static_transform_publisher for the 'map' to 'odom' frame is running in the launch file: <node pkg="tf2_ros" exec="static_transform_publisher" args="0 0 0 0 0 0 map odom"/>
  2. Check the frame names in the URDF and ensure robot_state_publisher publishes the correct transforms: ros2 run robot_state_publisher robot_state_publisher --ros-args -p robot_description:="$(xacro my_robot.urdf.xacro)"
  3. Add a transform listener with a retry loop and a timeout of 2 seconds, logging the available frames for debugging: try: transform = tf_buffer.lookup_transform('map', 'base_link', rclpy.time.Time(), timeout=rclpy.duration.Duration(seconds=2.0)); except tf2.LookupException: self.get_logger().info('Available frames: ' + str(tf_buffer.all_frames_as_string()))

Dead Ends

Common approaches that don't work:

  1. Set the lookup timeout to a very high value (e.g., 10 seconds) 95% fail

    Timeout doesn't create the missing transform; it only delays the error.

  2. Change the target_frame to 'odom' in all lookup calls 80% fail

    This may work temporarily but breaks applications that need the 'map' frame for global planning.

  3. Hardcode the transform as a static transform in the code 90% fail

    Static transforms don't update with robot movement; the robot will get stuck or collide.