Getting "RLException: [display.launch] is neither a launch file in package [robot1_description] nor is [robot1_description] a launch file name" error

asked 2018-11-08 12:10:46 -0500

TrickyDoe gravatar image

updated 2018-11-08 14:23:39 -0500

gvdhoorn gravatar image

So I am doing a tutorial for rviz and ROS Gazebo. I have a urdf file that I want to run with the following provided command:

roslaunch robot1_description display.launch model:="'rospack find robot1_description'/urdf/robot1.urdf" gui:=true

the urdf file is located in: /home/chapter4_tutorials/robot1_description/urdf/robot1.urdf and the launch file is located in: /home/chapter4_tutorials/robot1_description/launch/display.launch

However, I keep getting the following error:

RLException: [display.launch] is neither a launch file in package [robot1_description] nor is [robot1_description] a launch file name The traceback for the exception was written to the log file

Is there something I'm doing wrong?

I'm currently using the Ubuntu 18.04 distro.

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Can you tell us a bit about how you configured/created your workspace?

ROS packages must be located in a workspace. You cannot place them in arbitrary locations.


model:="'rospack find robot1_description'/..

this won't work. It should probably be

model:="$(rospack find ..)/.."
gvdhoorn gravatar image gvdhoorn  ( 2018-11-08 14:26:38 -0500 )edit

That might be the issue. I'm a total noob and I didn't really know a workspace had to be created. How could I go about doing that? And thanks for formatting my question as well.

TrickyDoe gravatar image TrickyDoe  ( 2018-11-08 16:41:19 -0500 )edit

If you haven't done so yet, I would suggest to follow a tutorial or two. The one that @David Lu links to is a good one. The generic ROS tutorials are also good to do at least once. Those will teach you the basics.

gvdhoorn gravatar image gvdhoorn  ( 2018-11-09 02:25:08 -0500 )edit