lucasw's profile - activity

@vargabalint - I haven't been running the from-scratch scripts on my own systems but they do run in github actions (when

@vargabalint - I haven't been running the from-scratch scripts on my own systems but they do run in github actions (when

It's a little messy but I've done this in https://github.com/lucasw/ros_from_src/tree/robot_state_publisher - I can help

It's a little messy but I've done this in https://github.com/lucasw/ros_from_src/tree/robot_state_publisher - I can help

Encoding "32FC1; compressedDepth png" in python: https://answers.ros.org/question/407659/how-to-generate-format-32fc1-co

Building rviz or rviz plugins with newer ogre versions may require replacing forward declarations with #include <Ogre

Building rviz or rviz plugins with newer ogre version may require replacing forward declarations with #include <Ogre.

Something like this may work depending on expected update rates and expected slop between the messages to be synchronize

Something like this may work depending on expected update rates and expected slop between the messages to be synchronize

Something like this may work depending on expected update rates and expected slop between the messages to be synchronize

Something like this may work depending on expected update rates and expected slop between the messages to be synchronize

Re-implementing that source code in python: q = transform_stamped.transform.rotation q_norm_error = abs(q.x * q.x + q.y

For python: q = transform_stamped.transform.rotation q_norm_error = abs(q.x * q.x + q.y * q.y + q.z * q.z + q.w * q.w -

For python: q = transform_stamped.transform.rotation q_norm_error = abs(q.x * q.x + q.y * q.y + q.z * q.z + q.w * q.w -

Each callback is getting called with every message published on image_topic after the callback is created, so cam_callba

Each callback is getting called with every message published on image_topic after the callback is created, so cam_callba

Each callback is getting called with every message published on image_topic after the callback is created, so cam_callba

I'm running roslint within travis like this:

catkin build $(catkin list --depends-on roslint -u) --no-deps --catkin-make-args roslint

When there is a lint error in C++ it is visible in stdout and is easy to read, but python errors are in a log file like this:

Errors     << foo_pkg:make /home/lucasw/catkin_ws/logs/foo_pkg/build.make.472.log

Adding --verbose works but there is a ton of other output also obscuring the actual error- is there a way to just get the python lint error?

I see https://github.com/ros2/launch/blob/m...

:class:launch.actions.IncludeLaunchDescription This action will include another launch description as if it had been copy-pasted to the location of the include action.

Can this be used within a launch.py something like this:

def generate_launch_description():
    included_launch = launch_ros.actions.IncludeLaunchDescription(package='foo', launch='my_launch.py', arguments=[...])  
    regular_node = launch_ros.actions.Node( package='bar', node_executable='my_node', output='screen')

    return launch.LaunchDescription([
        included_launch,
        regular_node,
    ])

rolling window global costmap borders are marked as obstacles Hi, i am trying to get a rolling window global costmap. I

How to add parameters to a subscriber callback function given that it is also an action_client Hello, I'm new to ROS and

circular dependency Hi, I have created a package and when I put the command line rosmake, I get this result. Where can

The code in https://github.com/AtsushiSakai/PythonRobotics may have what you are looking for, and is designed to have mi

In the link 'ros_comm#55' of the post of Martin, there is the solution. Add -s option in the rostopic pub command line.

I'm following http://gazebosim.org/wiki/Tutorials/1.9/ROS_Control_with_Gazebo to create my own project and getting this error:

[ERROR] [1384781890.186377319, 0.001000000]: This robot has a joint named "joint_seg_1" which is not in the gazebo model.
[FATAL] [1384781890.186620755, 0.001000000]: Could not initialize robot simulation interface

From the project I've created at https://github.com/lucasw/testbot ( current commit is 0f96ef7fcc8e31ff1bf1883dc10bc32ec440d8f1 )

I think there is something wrong with my joint or transmission, but I'm not seeing it:

<joint name="joint_seg_1" type="revolute">
    <parent link="base_link"/>
    <child link="link_1"/>
    <origin rpy="0 0 0" xyz="0.2 0 0"/>
    <axis xyz="0 0 1"/>
    <limit effort="1000.0" lower="-0.5" upper="0.5" velocity="0.5"/>
    <dynamics damping="0.5"/>
  </joint>
  <transmission name="tran_joint_seg_1">
    <type>transmission_interface/SimpleTransmission</type>
    <joint name="joint_seg_1"/>
    <actuator name="motor_seg_1">
      <hardwareInterface>EffortJointInterface</hardwareInterface>
      <mechanicalReduction>1</mechanicalReduction>
    </actuator>
  </transmission>

The only google hit was the code that outputs the error The code producing the error is https://github.com/pal-robotics/ros_control_gazebo/blob/master/ros_control_gazebo_tests/src/robot_sim_rr.cpp

How to decrompress compressed image topic?? Hello people, I have a question on how to decompress image topics. I have a

Similar question but for python https://answers.ros.org/question/332407/transformstamped-to-transformation-matrix-python

What does projection matrix provided by the calibration represent? I'm using such a tool from ROS/OpenCV in order to per

What does projection matrix provided by the calibration represent? I'm using such a tool from ROS/OpenCV in order to per