tb3_simulation_launch.py not found error

[Marwan99]

After following the getting started installation steps, when running the example step 3 ros2 launch nav2_bringup tb3_simulation_launch.py yields an error complaining about not not finding the launch file.

Error message:
file 'tb3_simulation_launch.py' was not found in the share directory of package 'nav2_bringup' which is at '/opt/ros/dashing/share/nav2_bringup'

The version of the nav2_bringup package installed form the Ubuntu repository is 0.2.6 and doesn't contain tb3_simulation_launch.py, however it contains nav2_simulation_launch.py which perform the expected task. So I guess this needs to be changed till the Ubuntu repository package is updated with whats on github.

[SteveMacenski]

/opt/ros/dashing/share/nav2_bringup --> dashing. Those instructions are for Eloquent and newer. There's been alot of updates between dashing and eloquent. I highly recommend Eloquent binaries since they're more stable and feature complete until Foxy is released in about a month

[Marwan99]

Thanks for clarification! I will make the switch to eloquent.

Juts one more question, I had a quick look at the page again I didn't find it mentioning that the example is intended for eloquent, is it worth adding a note about this or did I miss it? Just to prevent people falling in the same pitfall.

[SteveMacenski]

I had actually removed any reference to the distribution across the website to intentionally make it easier to grow forward and do less up-keep on the website. I don't think things other than that one have changed appreciably from one distribution to another.

There's been a conversation about how to do versioning of the documentation (have a different site / version for dashing vs eloquent vs master, read the docs supports) but its unsettled mostly out of lack of interest of the existing developers to go back and retool CI / sphinx.

I'd be open for a proposal to do versioning or change things on that front.

[Jayan-K-Duggal]

ile 'tb3_simulation_launch.py' was not found in the share directory of package 'nav2_bringup' which is at '/opt/ros/eloquent/share/nav2_bringup'

Hi, I am using ROS eloquent but still getting this error.