tompe17's profile - activity

Yes it did work when the bridge code was fixed. i tried to get the patch for the bridge code into the release but I do

I am seeing this also from Python code. Was there any resolution of this or any idea what can cause it?

I am seeing this als0 from Python code. Was there any resolution of that or any idea what can cause it?

With the lates update of Kinetic the display of laser scan data in some old bag files stopped working. I get the message

[ERROR] [1490090873.307973855]: Ignoring transform for child_frame_id "uav0/vicon_laser" from authority "unknown_publisher" because of an invalid quaternion in the transform (-0,018510 0,706860 -0,018510 0,706860)

in the terminal where rviz is started. This transform might be generated from a ros2 static transform but it worked before the latest update.

Is the quaternion invalid or is the check here buggy? And it did display properly before so can I disable this new check?

The launch file line generaing the transform that do now work is:

<node  pkg="tf2_ros" type="static_transform_publisher" name="laser_frame_publisher" args="0.12 0 -0.1 -0.01851 0.70686 -0.01851 0.70686 /uav0/vicon /uav0/vicon_laser" />

I am getting this in galaxy still. I am looking for a way to remove a subscription.

I am also having standard message like for tf. I might use a wrapper but the biggest issue with that solution is that I

I am also having standard message like for tf. I might use a rapper but the biggest issue with that solution is that I

ROS2: How to get the sender of a message? Is it possible in ROS2 (using rclpy) to get the sender of a message in a callb

So I did write a script to generate message files and rules for translation so I can use ROS2 for DJI Onboard SDK ROS 4.

I finally managed to find the repos on github so looked in https://github.com/ros2-gbp/rqt_plot-release and managed to

Ros2 galactic and porting rqt plugins from ros1? I want to port some of my ROS1 rqt plugins using rospy to ROS2 Galactic

ROS1-ROS2 bridge for DJI Onboard SDK ROS 4.1.0? Have anybody done a mapping between ROS1 and ROS2 for the new dji_sdk RO

ROS1-ROS2 bridge for dji_sdk? Have anybody done a mapping between ROS1 and ROS2 for the new dji_sdk ROS API (version 4+,

ROS1-ROS2 bridge for dji_sdk? Have anybody done a mapping between ROS1 and ROS2 for the new dji_sdk ROS API (version 4+,

ROS1-ROS2 bridge for dji_sdk? Have anybody done a mapping between ROS1 and ROS2 for the new dji_sdk ROS API (version 4+,

rqt_image_view and ros2 throws exception I have problem in ros2 with rqt_image_view. Starting it and pressing refresh g

rqt_image_view and ros2 throws exception I have problem in ros2 with rqt_image_view. Starting it and pressing refresh g

I use sdf file and have a script that spawn the sdf file and the script finds the model.sdf. The meshes are found it se

Why strange delay in visual in gazebo when using ROS2 SetEntityState I have a model in Gazebo with a visual and a camera

Thanks, it worked. Is this documented somewhere that you can use a tuple? Or is it some Python standard?

I want to use a parameter (ns) to select the yaml file to load for parameters. I have a hard time finding how to do it... Is there a better way to do it?

I want to do something like:

def generate_launch_description():
    ns_arg = DeclareLaunchArgument("ns", default_value=TextSubstitution(text="/dji0"))
    location_arg = DeclareLaunchArgument("location", default_value=TextSubstitution(text="granso"))

    location_config = os.path.join(
        get_package_share_directory('lrs_wdb'),
        'config',
        f'location_{LaunchConfiguration('location')}.yaml'
    )

    return LaunchDescription([
        ns_arg,        
        Node(
            package='lrs_wdb',
            output='screen',
            emulate_tty=True,            
            namespace=LaunchConfiguration('ns'),
            executable='wdb',
            name='wdb',
            parameters=[location_config]
        )
    ])

But this is not working since "LaunchConfiguration('ns')" is an object. And googling it I did not find a strightforward way to get the value. So any suggestions how to solve this? I could use an environment variable I suppose but I do not think that is a good solution since for example ns is specified with a parameter.

ros2 launch: How to select parameters yaml file depending on parameter? I want to use a parameter (ns) to select the yam

ros2 launch: How to select parameters yaml file depending on parameter? I want to use a parameter (ns) to select the yam

I created a package with:

ros2 pkg create --build-type ament_python lrs_exec

In that package I created a lcunh file according to https://docs.ros.org/en/galactic/Tuto...

The launch file is:

from launch import LaunchDescription
from launch_ros.actions import Node

def generate_launch_description():
    return LaunchDescription([
        Node(
            package='lrs_exec',
            output='screen',
            executable='resource',
            name='resource_agent'
        )
    ])

The executable is called resource.py and is in a sub-dir lrs_exec of the package lrs_exec.

Trying to run:

ros2 launch lrs_exec exec.launch.py

I get:

tompe@tpexps:~$ ros2 launch lrs_exec exec.launch.py
[INFO] [launch]: All log files can be found below /home/tompe/.ros/log/2022-01-24-15-02-45-557721-tpexps-4043650
[INFO] [launch]: Default logging verbosity is set to INFO
Task exception was never retrieved
future: <Task finished name='Task-2' coro=<LaunchService._process_one_event() done, defined at /opt/ros/galactic/lib/python3.8/site-packages/launch/launch_service.py:226> exception=SubstitutionFailure("executable 'resource' not found on the libexec directory '/home/tompe/lrs2_ws/install/lrs_exec/lib/lrs_exec' ")>
Traceback (most recent call last):

So should this work or do I have to create a specific launch package as it was created in the launch turotial? I tested with resource.py and no difference.

So my mistake, I had forgotten to add to entry points in setup.py. The following: entry_points={ 'console_scripts':

Above I had manually created install/lrs_exec/lib/lrs_exec. The first error message was that the directory did not exist

Can you have ros2 python launch files in pure python packages? I created a package with: ros2 pkg create --build-type a