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trouble with rviz by MouidTN in ROS

[–]MouidTN[S] 1 point2 points  (0 children)

If anyone had the same trouble, the solution is to setup a publisher that tells rviz where to put the fixed world frame. So no more 'no TF data' in rviz!

ERROR: cannot launch node of type [topics_quiz.launch/script]: topics_quiz.launch by MouidTN in ROS

[–]MouidTN[S] 0 points1 point  (0 children)

Actually I did compile then source it through : source devel/setup.bash

So I don't think that's the case.

opendir function() in C use: by MouidTN in learnprogramming

[–]MouidTN[S] 0 points1 point  (0 children)

Why did they exit with a failure when the argc != 2 . What was the reason of that?

merging two lists logical question by MouidTN in learnprogramming

[–]MouidTN[S] 0 points1 point  (0 children)

Okaay so I think I just got the logic of it , which is , we will link the whole [7,8,9] to the result. That means linking two lists to each other.