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@BennyRe @gvdhoorn @Maya

Thanks a lot for your help.

• The cause of error was that I didn't run roscd urdf_tutorial before roslaunch.
• The problem has been solved when I :-
  • first, run roscd urdf_tutorial.
  • then, run the command roslaunch urdf_tutorial display.launch model:=urdf/01-myfirst.urdf.

It is working successfully now & the cylinder appears in Rviz as shown in the tutorial.

@BennyRe @gvdhoorn @Maya

Thanks a lot for your help.

• The cause of error was that I didn't run roscd urdf_tutorial before roslaunch.
• The problem has been solved when I :-
  • first, run roscd urdf_tutorial.
  • then, run the command roslaunch urdf_tutorial display.launch model:=urdf/01-myfirst.urdf.

It is working successfully now & the cylinder appears in Rviz as shown in the tutorial.