Morris's profile - activity

This worked for me. python3-opencv installs version OpenCV 4.2 which works with Foxy. It was not working when I did pi

One solution for quitting a node in a callback is by raising an exception, raise SystemExit, and to catch this with a tr

ROS 2: How to shutdown a node from within a callback? I have a node with a callback. Now I want this callback to be abl

The self.destroy_node() does not work for me in Ubuntu -- it still hangs. But I did think of a solution which is to rai

One solution is to get out of the callback by raising an exception and to catch this with a try statement around the spi

The self.destroy_node() does not work for me -- it still hangs. But I did think of a solution which is to raise SystemE

Hmmm, it looks like it works for you, but it does not work for me -- mine still hangs at that line. A difference is tha

ROS 2: How to shutdown a node from within a callback? I have a node with a callback. Now I want this callback to be abl

ROS 2: How to shutdown a node from within a callback? I have a node with a callback. Now I want this callback to be abl

ROS 2: How to shutdown a node from within a callback? I have a node with a callback. Now I want this callback to be abl

Yes, sourcing the underlay is that is needed.

I'm getting the same error on a brand new Jammy install.

Error installing Humble on brand new Jammy I just did a clean install of Ubuntu 22.04 (Jammy) and then followed the stan

Error installing Humble on brand new Jammy I just did a clean install of Ubuntu 22.04 (Jammy) and then followed the stan

Error installing Humble on brand new Jammy I just did a clean install of Ubuntu 22.04 (Jammy) and then followed the stan

Error installing Humble on brand new Jammy I just did a clean install of Ubuntu 22.04 (Jammy) and then followed the stan

I have almost the same problem. I'm running roscore on the Raspberry Pi: On WSL I can subscribe to topics that are pu

Excellent!

How to fix camera_calibration giving error on save in Noetic I am running camera_calibration in Noetic: rosrun camera_c

I am running camera_calibration in Noetic:

rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.026 image:=/camera/image_raw camera:=/raspicam_node

It works fine finding the calibration parameters, but when I try to save the parameters, I get an error from Python 2.x code. Is anyone else getting this problem? Seems bad that we have Python 2.x code in there. Here is the error:

Traceback (most recent call last):81604   Duration: 69.231470 / 84.882752               0
  File "/opt/ros/noetic/lib/python3/dist-packages/camera_calibration/camera_calibrator.py", line 273, in on_mouse
self.c.do_save()
  File "/opt/ros/noetic/lib/python3/dist-packages/camera_calibration/calibrator.py", line 577, in do_save
self.do_tarfile_save(tf) # Must be overridden in subclasses
  File "/opt/ros/noetic/lib/python3/dist-packages/camera_calibration/calibrator.py", line 889, in do_tarfile_save
taradd(name, cv2.imencode(".png", im)[1].tostring())
  File "/opt/ros/noetic/lib/python3/dist-packages/camera_calibration/calibrator.py", line 877, in taradd
if isinstance(buf, basestring): 
NameError: name 'basestring' is not defined

The command basestring is Python 2 command that is now str in Python 3. So I think that's the problem. I can't directly edit this file though, so don't know how to fix the problem.

As @mgruhler pointed out, this is a bug that has been fixed https://github.com/ros-perception/image_pipeline/pull/552, b

As @mgruhler pointed out, this is a bug that has been fixed https://github.com/ros-perception/image_pipeline/pull/552, b

That's great. A couple questions 1. Do you mean I need to install all of ROS Noetic from source, or just the ros-perce

camera_calibration giving error on save in Noetic I am running camera_calibration in Noetic: rosrun camera_calibration

How to fix camera_calibration giving error on save in Noetic I am running camera_calibration in Noetic: rosrun camera_c

Gazebo for Noetic not working in WSL I did a clean install of Noetic in Ubuntu 20.04 on WSL 2. This installs Gazebo 11,

Gazebo for Noetic not working in WSL I did a clean install of Noetic in Ubuntu 20.04 on WSL 2. This installs Gazebo 11,

Okay, done.

I did a clean install of Noetic in Ubuntu 20.04 on WSL 2. This installs Gazebo 11, but Gazebo does not run when I type:

gazebo

Other X11 utilities like xeyes work fine in WSL, so the X-Server and DISPLAY are fine. I also went to the official Gazebo page: http://gazebosim.org/tutorials?tut=in..., and followed those directions, which just confirmed that I already have the latest version of Gazebo.

Has anyone gotten Gazebo working with Noetic in WSL2?

I found the problem and solution. Make sure to set this environment variable before running gazebo: export LIBGL_ALWAY

Gazebo for Noetic not working in WSL I did a clean install of Noetic in Ubuntu 20.04 on WSL 2. This installs Gazebo 11,

Gazebo for Noetic not working in WSL I did a clean install of Noetic in Ubuntu 20.04 on WSL 2. This installs Gazebo 11,