Weird rqt_graph when running turtlesim

asked 2015-07-29 13:02:00 -0500

luketheduke
283 ●24 ●33 ●37

I am going through the ROS tutorials and on the "Understanding Topics" tutorial in section 1.2.1 when I launch rqt_graph I get this image: image description

It should be this:

image description (according to the tutorial)

my_turtle was from the previous tutorial and I tried killing it with rosnode kill /my_turtle but when I restarted rqt_graph it didn't change. Any ideas as to why this is happening? Also why are there three turtlesim nodes besides the my_turtle node, instead of two?

answered 2015-07-29 13:09:56 -0500

Vinh K
110 ●24 ●30 ●37

but your rosnode kill /my_turtle does not match your _my_turtle with underscore in the front.

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when I try to kill node _my_turtle I get this message: ERROR: Unknown node(s): * /_my_turtle Also when I run rosnode list I get the following:

 /my_turtle
/rosout
/rostopic_13088_1438192992473
/rostopic_13492_1438193756802
/teleop_turtle
/turtlesim

luketheduke ( 2015-07-29 13:19:26 -0500 )edit

I also just noticed that my mode was set to Nodes/Topic (active). If I switch to Nodes only it looks better but not the same

luketheduke ( 2015-07-29 13:22:05 -0500 )edit

Yeah Luke I am not sure. But your graph does not have to look exactly like the tutorial. the circle inside the square of each node is fine.

Vinh K ( 2015-07-29 13:43:33 -0500 )edit

My suggestion is to run it again to see if you have any more issues.

Vinh K ( 2015-07-29 13:45:48 -0500 )edit

It disappeared now. Thanks for the help!

luketheduke ( 2015-07-29 13:53:23 -0500 )edit

no problem, you helped yourself lol

Vinh K ( 2015-07-29 14:45:21 -0500 )edit

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