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I'm in need of a newer version or OpenCV than is provided by my Ubuntu repo. Is there a version or fork of OpenCV that contains a package.xml so it can be compiled as part of a ROS workspace? Seems like that would be more convenient than compiling a local version.

Was having trouble getting multiple robots to work, so I tried to boil it down to the simplest possible scenario. Here's what I have for a launch file:

<?xml version="1.0" encoding="utf-8"?>
<launch>
  <group ns="ns0">
    <param name="robot_description" command="cat '$(find urdf_tutorial)/urdf/01-myfirst.urdf'"/>
    <node name="my_stp" pkg="tf" type="static_transform_publisher" args="-1 0 0 0 0 0 /map base_link 100"/>
    <node name="my_jsp" pkg="joint_state_publisher" type="joint_state_publisher"/>
    <node name="my_rsp" pkg="robot_state_publisher" type="state_publisher"/>
  </group>

  <group ns="ns1">
    <param name="robot_description" command="cat '$(find urdf_tutorial)/urdf/02-multipleshapes.urdf'"/>
    <node name="my_stp" pkg="tf" type="static_transform_publisher" args="1 0 0 0 0 0 /map base_link 100"/>
    <node name="my_jsp" pkg="joint_state_publisher" type="joint_state_publisher"/>
    <node name="my_rsp" pkg="robot_state_publisher" type="state_publisher"/>
  </group>

  <node name="rviz" pkg="rviz" type="rviz" respawn="false" output="screen" args="-d $(find xxx)/config/xxx.rviz"/>
</launch>

And my xxx.rviz is the same as default.rviz with the addition of two RobotModels:

- Alpha: 1
      Class: rviz/RobotModel
      Collision Enabled: false
      Enabled: true
      Links:
        All Links Enabled: true
        Expand Joint Details: false
        Expand Link Details: false
        Expand Tree: false
        Link Tree Style: Links in Alphabetic Order
      Name: RobotModel
      Robot Description: ns0/robot_description
      TF Prefix: ""
      Update Interval: 0
      Value: true
      Visual Enabled: true
    - Alpha: 1
      Class: rviz/RobotModel
      Collision Enabled: false
      Enabled: true
      Links:
        All Links Enabled: true
        Expand Joint Details: false
        Expand Link Details: false
        Expand Tree: false
        Link Tree Style: ""
      Name: RobotModel
      Robot Description: ns1/robot_description
      TF Prefix: ""
      Update Interval: 0
      Value: true
      Visual Enabled: true

I would expect this to show 01-myfirst.urdf at position (-1,0,0) and 02-multipleshapes.urdf at position (1,0,0). However, it shows 02-multipleshapes.urdf flickering back and forth between the two positions. 01-myfirst.urdf is not shown at all. Can anyone explain what I'm missing?

Thank you both. I feel a little dumb for not spotting some of this in the docs yesterday. dynparam does what I need. I a

externally set param on dynamic_reconfigure node I can set a param on a node using rosparam on the command line or using

I wish I had a good answer for you. I was never able to get a locally compiled OpenCV to work the way you are doing it,

After tinkering a bit, I'd consider this question to be answered. gazebo.launch.py is the ROS2 version of ROS1's empty_w

Thanks for pointing it out. I think this is a step in the right direction; I'll need to scrutinize it more after meeting

Does anyone have an example of using a .xacro file in a ros2 launch script? I have tried the ros2 branch of the official

launch Gazebo from ROS2 I want to be able to launch Gazebo from a ROS2 launch script, but I'm running into some trouble.

Has there been any progress on this? I think I'm having the same problem. I have gzserver = launch.actions.ExecuteProce

Has there been any progress on this? I think I'm having the same problem. I have gzserver = launch.actions.ExecuteProce

Thanks 130s. I had stopped looking at that page about 24 hours ago because I found the instructions confusing and it all

compiling stereo_image_proc with local OpenCV I have read a few places that I should be able to compile stereo_image_pro

compiling stereo_image_proc with local OpenCV I have read a few places that I should be able to compile stereo_image_pro

package.xml for OpenCV I'm in need of a newer version or OpenCV than is provided by my Ubuntu repo. Is there a version o

This odd little workaround works for me. Thank you, bsaund :) Can anyone explain what's going on here in detail? I assum

After cleaning, elevation_mapping computes variances using your choice of SensorProcessor class. This might be a problem

After elevation_mapping transforms clouds to your specified sensor_frame_id, it applies a cleaning step where you could

@gvdhoorn, thanks for all your help. In the end, I don't need to do any transform at all. elevation_mapping is doing thi

My original point cloud and transformed point cloud are in different frames, but I expect them to appear coincident in r