I am attempting to replicate the online environment on my local system, which is running ROS Melodic.
I have followed the tutorial closely and carefully, having downloaded the files used in the course, but when I attempt to run step 3 of example 1.1:
roslaunch turtlebot_rviz_launchers view_mapping.launch
from Unit 1 in the ROS Navigation in 5 Days course, the
map topics do not work as expected on Rviz.
Provided is a screenshot of what is supposed to happen (from the online tutorial), and another of what actually happens on my local system can be found here (the first being the Rviz from the tutorial and the second being the replicate on my local system)
Due to the fact that I have not edited the files from its original state, I have come to a conclusion that it may be due to the difference between the ROS version used online (Noetic) and the one on my local system (Melodic). Please let me know if you have an alternative idea!
The GitHub repository hosting the code can be reached at this link