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nodes not working in launch file

asked 2014-12-30 06:40:34 -0600

updated 2015-01-07 11:06:07 -0600

Hello guys, I have the problem that some nodes are not working from launch file. Specifically the tf static_transform_publisher and also the rosbag record. I do not get any error but they are not working in the launch file. When i run them in terminal using rosrun they work perfectly!

any solution or suggestion for this problem?

one the launch files is:

  <master auto="start"/>
  <param name="/use_sim_time" value="true"/>

  <node name="play" pkg="rosbag" type="play" args="-r 0.99 /home/mypack/vicon3_2014-12-26-17-33-16.bag"/>
  <node pkg="tf" type="static_transform_publisher" 
         name="odom_to_world" args="4.53429770054 2.62724045772 0.568230440739 0.0554815495188 0.998340882582 -0.0146944327274 -0.00462098201913  world laser  100" />

  <node name="vicon2pos" pkg="mypack" type="vicon2pos" args="/Pioneer /Table1" output="screen"/>
  <node name="vicon2pos2" pkg="mypack" type="v2pos" args="/Pioneer /Table1" output="screen"/>
  <!-- Run the rivz -->
  <node name="rviz" pkg="rviz" type="rviz" args="-d /home/mypack/vicon.vcg" />


The static_transform_publisher, vicon2pos and v2pos are not working properly in the launch file. Actually, the transform_publisher is not publishing anything and the other two nodes are not even subscribe to topics played in rosbag. Running command lines in terminals, all are working properly!!!

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Can you post the launch file?

Tom Moore gravatar image Tom Moore  ( 2014-12-30 07:29:19 -0600 )edit

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answered 2015-01-07 13:25:38 -0600

gvdhoorn gravatar image

According to this post on ros-users, you have to start rosbag with the --clock argument for use_sim_time to work properly with static_transform_publisher (and probably other nodes as well):

The output of roswtf reported the following:

"ERROR /use_simtime is set but no publisher of /clock is present"

Setting use_simtime to true and playing the bag with the --clock option resolved all issues.

You will probably see the same output if you start your launchfile and then run roswtf.

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Thanks That fixes every thing :) I think this comment should be written with the rosbag play commandline details.

Anas Alhashimi gravatar image Anas Alhashimi  ( 2015-01-08 03:07:23 -0600 )edit

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Asked: 2014-12-30 06:40:34 -0600

Seen: 1,192 times

Last updated: Jan 07 '15