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custom_node not launching

asked 2022-01-28 01:54:12 -0500

umar_anjum gravatar image

Hi, all I have ubuntu 16.04LTS and ROS1, I am working on ur5, I am trying to create a launch file which will include my pythons executable the following is my launch file

?xml version="1.0"?>


arg name="gui" default="True" />

param name="robot_description" command="$(find xacro)/xacro --inorder $(find ur5_description)/urdf/ur5_robotiq85_gripper.urdf.xacro" />

node name="my_joint_state_publisher" pkg="ur5_description" type="" />

node name="robot_state_publisher" pkg="robot_state_publisher" type="state_publisher" />

node name="rviz" pkg="rviz" type="rviz" args="-d $(find ur5_description)/config/ur5.rviz" required="true" /> /launch>

but this gives me the following error: cannot launch node of type [ur5_description/]: can't locate node [] in package [ur5_description]

my pkg name is correct and my python file is an executable file check then twice. What could be the reason of this error?

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Is your package visible when you run rospack list? If not you need to source it

osilva gravatar image osilva  ( 2022-01-28 05:40:51 -0500 )edit

2 Answers

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answered 2022-01-28 07:57:00 -0500

Robo_guy gravatar image

@umar_anjum this link might be helpful - This guy had a similar problem like you, so this should solve your problem.

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@umar_anjum did that link help you ? Did it help you in solving your problem ?

Robo_guy gravatar image Robo_guy  ( 2022-02-02 23:54:24 -0500 )edit

@Robo_guy I solved the problem.

umar_anjum gravatar image umar_anjum  ( 2022-02-08 03:52:53 -0500 )edit

@umar_anjum Ok great

Robo_guy gravatar image Robo_guy  ( 2022-02-09 22:56:22 -0500 )edit

answered 2022-02-08 03:55:55 -0500

umar_anjum gravatar image

I kept my original launch file as is and changed this into a python file which I can run by making is executable. This pretty much solved my problem and I came to find that launch files are to just launch things in an environment but not to manipulate them.

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Asked: 2022-01-28 01:54:12 -0500

Seen: 55 times

Last updated: Feb 08