Error smach_viewer in ROS noetic

asked 2022-07-05 02:56:44 -0600

Morteza7
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updated 2022-07-05 02:58:37 -0600

Hi, I read the smach tutorial and there is no problem until I run smach_viewer command. Smach tutorial rosrun smach_viewer smach_viewer.py

The terminal shows the below error : [rospack] Error: package 'smach_viewer' not found

I checked the _/opt/ros/noetic/share_ path there is no smach_viewer package. just smach. the question is: What should I do to see the graphical representation of my smach code?

I'm using ubuntu focal, Noetic ROS, and python3. thanks a lot for your support.

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answered 2022-07-14 02:47:50 -0600

Morteza7
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It seems Smach lib is based on Python2 and ROS noetic is not supported by python2. So the lib of the Smach should change to Python3.

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answered 2023-03-28 09:20:02 -0600

a.bl
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Not sure if this has changed recently, but i have installed python 3.8, am using ROS noetic and can start smach_viewer after having installed it with sudo apt-get install ros-noetic-smach-viewer. (I was facing another problem though that smach_viewer did not run within a conda environment. (base) conda deactivate solved this.)

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