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2020-07-10 12:51:21 -0500 answered a question How to subscribe to image_transport topic in RViz?

1) Published the compressed image on /your_topic_here/compressed 2) Add an Image in rviz. Under Image Topic fill in /yo

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2019-04-09 09:43:04 -0500 commented question Building msg in c++

Posting the specific error you are receiving will help us solve the problem

2019-04-09 09:41:35 -0500 commented question Building msg in c++

Use && instead of & for boolean logic

2019-04-09 09:40:46 -0500 answered a question Building msg in c++

Instead of obj_coords.points[i] = pt, use obj_coords.push_back(pt). obj_coords.points is a vector, and is initialized w

2019-04-05 11:57:01 -0500 commented question Has anyone used GPU-voxels package in ROS?

Yes, I do. I have made some modification and wrappers around gpu-voxels so that I display voxelgrids to rviz and can se

2019-04-05 11:47:27 -0500 commented question Has anyone used GPU-voxels package in ROS?

Yes, I do. I have made some modification and wrappers around gpu-voxels so that I display voxelgrids to rviz and can se

2019-04-05 09:55:08 -0500 commented question Point Cloud Publisher inside class

The .so: undefined reference to symbol indicates the complication is failing at the linker. First off, I would check if

2019-04-05 08:37:01 -0500 edited answer Can I set initial joint positions in Gazebo/MoveIt via configuration?

Launching Gazebo paused, setting the model configuration via a gazebo service, then unpausing is the best I have found.

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2017-09-14 09:21:51 -0500 answered a question tf2 convert transform to msg

tf2::convert is not designed to convert one message to a different message. http://docs.ros.org/kinetic/api/tf2/html/im

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2017-02-09 05:31:00 -0500 commented answer set revolute joint start angle

You can do this entirely from launch functions, as spawn_model has an "-unpause" option

2017-02-08 19:27:09 -0500 answered a question Can I set initial joint positions in Gazebo/MoveIt via configuration?

Launching Gazebo paused, setting the model configuration via a gazebo service, then unpausing is the best I have found. However, you can do this completely from the launch file, as "spawn_model" has an option to unpause gazebo.

  <node name="urdf_spawner" pkg="gazebo_ros" type="spawn_model" respawn="false" output="screen"
    args="-urdf -model rrbot -param robot_description
          -J joint1 1.0
          -unpause"/>

Note: If you have to spawn multiple models I would not use this method. The order of node launching isn't guaranteed, thus you might unpause gazebo before you intend.

2017-02-08 19:27:08 -0500 answered a question Initial joint angles

Start gazebo paused, then have spawn_model unpause gazebo.

<include file="(find gazebo_ros)/launch/empty_world.launch">
   ...
   <arg name="paused" value="true">
</include>

<node name="arm_base_spawn_urdf" pkg="gazebo_ros" type="spawn_model" args="-urdf -param robot_description -model schunk_lwa4p_and_base 
    -J schunk_lwa4p_and_base::J_foldingSupport 0.075 
    ...
    -unpause 
    ..."/>

If this does not work, you can make your own version of "spawn_model", where you can pause gazebo, set the configuration, reset your joint controller, then unpause gazebo.

Some links I found helpful:

https://github.com/ros-simulation/gaz... https://github.com/ros-simulation/gaz...