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If my message type is geometry_msgs/WrenchStamped, do I still need to define it in msg folder or I can skip it? As I am not using a custom message type.
Thanks Anirudh
A standard message type does not need to be defined in the msg folder. Only custom messages need to be defined there.
You can skip it. All standard message types are already run through gencpp/genpy/gennodejs/etc. during build time of the ROS distribution packages to generate the c++, python, and node.js message definition classes. You can verify this using locate on your machine:
> locate WrenchStamped
/opt/ros/melodic/include/geometry_msgs/WrenchStamped.h
/opt/ros/melodic/lib/python2.7/dist-packages/geometry_msgs/msg/_WrenchStamped.py
/opt/ros/melodic/lib/python2.7/dist-packages/geometry_msgs/msg/_WrenchStamped.pyc
/opt/ros/melodic/share/common-lisp/ros/geometry_msgs/msg/WrenchStamped.lisp
/opt/ros/melodic/share/common-lisp/ros/geometry_msgs/msg/_package_WrenchStamped.lisp
/opt/ros/melodic/share/gennodejs/ros/geometry_msgs/msg/WrenchStamped.js
/opt/ros/melodic/share/geometry_msgs/msg/WrenchStamped.msg
/opt/ros/melodic/share/roseus/ros/geometry_msgs/msg/WrenchStamped.l
/opt/ros/melodic/share/rviz/icons/classes/WrenchStamped.png
Asked: 2020-10-30 11:13:50 -0600
Seen: 142 times
Last updated: Oct 30 '20
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