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6 votes
Accepted

Robot moving sideways in RVIZ ROS

I have found the problem after some long search on the internet. The problem was that in Rviz, X-axis is defined as front of the robot and Y-axis is defined as the sideways. However, in my URDF I ...
  • 526
3 votes
Accepted

RViz: How to Visualize a Voxblox Mesh as a MarkerArray?

So the doc's were out of date. I just updated them as the mesh is actually of type voxblox_msgs::MeshBlock. Voxblox use to output a standard MarkerArray, however ...
2 votes

Calculating the distance of a point from point cloud data

These values are relative to the camera. Z is always positive as the camera can't see what is behind. X and Y can be positive or negative depending on if an object is left/right or higher/lower than ...
  • 1,335
2 votes

ROS Laser Scan rotates with the robot in RVIZ

Behavior like this suggests that your odometry is not being computed properly when the vehicle turns. It's hard to tell but the model appears to have rotated about 90 degrees but the laser scans ...
  • 1,511
2 votes

RLException: neither a launch file package nor a launch file name

I just had to re-enter: source devel/setup.bash In every new terminal.
  • 33
2 votes

odom frame behaves mischievously in rviz when Configuring Robot Localization with error message TF_OLD_DATA

If you are working on a real-robot, set use_sim_time to False for each node, otherwise set it to ...
1 vote
Accepted

why custom generated pointcloud2 is displayed as line on rviz?

Comparing my code to the link sent by @Tully above, I could found the mistake. Here's the corrected code ...
1 vote

ROS - RViz reports "No transform from [kinect] to [world]" when URDF appears correct

Solved; it was an issue with the container networking configuration. I am testing with RViz outside of the container and only port 11311 was forwarded. ...
1 vote

[ROS2 Foxy]RVIZ crashes when using Nav2- Turtlebot3

RViz is having trouble creating the necessary GL context. You can find this issue listed in the rviz/Troubleshooting This is caused by a lack of the GL_ARB_vertex_buffer_object OpenGL extension. I ...
  • 1,511
1 vote

Drawing in gazebo ROS

The recommended way to draw arbitrary shapes in RViz is to use the Marker Display you can draw shapes in specific locations with colors and different alpha elements. If you want to interact with them ...
  • 1,511
1 vote

Unintentional point cloud duplication during depth image conversion

I agree with r-bryan that you're likely missinterpreting some of the metadata. It could be the frame width or alternatively the stride width or something else in the depth image. There's a good ...
  • 1,511
1 vote
Accepted

Unintentional point cloud duplication during depth image conversion

At first I thought there was some sort of systematic raw format or resolution error, sort of like ROS + kinect depth data duplication . Then I noticed that each corridor appears in a different ...
  • 1,236
1 vote

Count number of collisions while navigating to goal

Collisions with? If you have an occupancy map, then you can check with that and the robot's base_link. If the objects are static then just having their positions ...
1 vote

How to setup ROS and it's GUI tools in local server and connect to local macbook

On a general level, if we're talking about ROS1, then you can use your Macbook to send/receive ROS topics/services/parameters etc. using SSH to/from your Ubuntu server, where ROS master runs. I've ...
1 vote

Running ROS, Gazebo and RViz on Macbook

I have run Gazebo in machines that don't have Nvidia cards for years now, never had any problems with it. The problem is more likely related to the virtual machine environment, see here and here for ...
  • 1,286
1 vote
Accepted

Coordinates seem to show overlapping but RViz doesn't

The origin defined inside link_01 is not the position of the cylinder in the global coordinate frame (the "world"), but in its own private frame. By default the ...
  • 1,286
1 vote

Calculating the distance of a point from point cloud data

The XYZ readings from the camera are in the reference frame of the camera. @FooBar is correct about the X/Y values: they are planar about the center of the camera, just like the OpenGL viewing window. ...
1 vote
Accepted

Running ROS on Digital Ocean?

I did install a YARP based environment on my droplet along with graphics and it works great. I use it for testing purpose. The installation in my case was very standard and when it came to graphics I ...
1 vote

Fiducials in conjuction with AMCL

I think that you're correct in your assessment that "there is some disconnect between the axes of the 2D map and the response from aruco_detect." Reading the documentation for the topic <...
  • 1,511
1 vote

RViz: How to Visualize a Voxblox Mesh as a MarkerArray?

I had this problem too. You just have to source the corresponding setup.bash for the terminal that runs rviz and the /voxblox_node/mesh topic will be available to show in rviz.
  • 111

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