Custom ROS msg type does not get added to rosmsg list even after MATLAB restart
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An Nguyen
am 19 Mär. 2019
Kommentiert: An Nguyen
am 19 Mär. 2019
I'm following this guide to create a custom ROS message type (https://www.mathworks.com/help/robotics/ug/ros-custom-message-support.html).
This is the structure of my msg
path_planning_msgs FOLDER
--- path_planning_msgs FOLDER
--- package.xml (copied from guide, replace w <name>path_planning_msgs</name>
--- Path.msg
Contents of package.xml
<package>
<name>path_planning_msgs</name>
<version>1.1.01</version>
<build_depend>message_generation</build_depend>
<build_depend>geometry_msgs</build_depend>
<build_depend>std_msgs</build_depend>
</package>
Contents of Path.msg
Header header
path_planning_msgs/VehicleState[] states
Then I executed these commands and everything seemed to work (I'm on Ubuntu 16.04 LTS)
Then I edited javaclasspath.txt to add the line
Then I ran the addpath and savepath
Then I closed MATLAB to restart it.
Then I checked rosmsg list but the path_planning_msgs/Path type is nowhere to be found.
Thank you in advance.
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Sebastian Castro
am 19 Mär. 2019
Bearbeitet: Sebastian Castro
am 19 Mär. 2019
Hi An,
Pretty sure the ROS package requires your .msg file to be inside a subfolder called msg.
So your folder structure should be as follows:
path_planning_msgs FOLDER
--- package.xml
--- msg FOLDER
--- Path.msg
Try that and let us know if it works!
- Sebastian
6 Kommentare
Sebastian Castro
am 19 Mär. 2019
An,
That latest error is exactly because you don't have a VehicleState.msg file defined! If you look at the error text it will show you it's pointing at an undefined symbol "VehicleState".
By the way, in future it would be much more useful instead of screenshots to copy-paste the error message text. This makes the question searchable if others have similar errors!
- Sebastian
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