roslaunch not working with rviz

asked 2019-02-27 06:26:49 -0500

Sriram_M
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updated 2019-02-27 08:49:38 -0500

Delb

3907 ●16 ●105 ●68

I have created an URDF file and launch file for displaying it in RVIZ but I am getting the following as shown below.

This is the command given in teminal:

roslaunch robot1_description display.launch model:="`rospack find
robot1_description`/urdf/robot1.urdf"

When I press enter after executing this command I am getting simply an angular bracket like this ">" When I press enter again the angular bracket is shown. I need help.

answered 2019-02-27 07:27:58 -0500

Delb

3907 ●16 ●105 ●68

I'm not sure why you have brackets after running the command, are you sure the command you've written in the question is actually the one you try ? I can only reproduce this if I don't put the last ".

Anyways you also have something wrong in your command : rospack find robot1_description. Since you have quotations mark, every thing you type between will be treated as a string so your arg model will be as you typed but not with the actual path of your package. You need to add $ and put rospack find your_package between parentheses to tell the difference with a string.

So this command should be working (provided you have correctly sourced your package so that rospack find gives the correct path):

 roslaunch robot1_description display.launch model:="$(rospack find robot1_description)/urdf/robot1.urdf"

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Still the problem is not clarified. Again the angular bracket ">" is appearing even after the execution of the above mentioned command.

Sriram_M ( 2019-02-27 08:10:07 -0500 )edit

Ok so there is something wrong with your urdf and/or launch file, can you add them in your question please ?

Delb ( 2019-02-27 08:17:04 -0500 )edit

There is most likely nothing wrong with the URDF. The "angle bracket" is shown by the shell (most likely bash). roslaunch isn't even being run yet.

gvdhoorn ( 2019-02-27 08:33:23 -0500 )edit

And @Delb: the backticks are an alternative notation when embedding shell commands in strings in bash. They work (almost) like $().

gvdhoorn ( 2019-02-27 08:34:33 -0500 )edit

Right, I've actually missed the fact that the command was :

roslaunch robot1_description display.launch model:="`rospack find robot1_description`/urdf/robot1.urdf"

because of the preformatted text in the question. I've edited the question to make it clearer.

Delb ( 2019-02-27 08:49:43 -0500 )edit

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