We will now look at some of the common issues that are experienced when working with ROS, as well as tips on how to solve them.
One of ROS in-built tools to find issues in an ROS system is roswtf
. roswtf
is a command-line tool that checks for issues in the following areas of ROS:
- Environment variables and configuration
- Packages or meta-packages configuration
- Launch files
- Online graphs
We can check the issues inside an ROS package by simply going into the package and entering roswtf
. We can also check for issues in our ROS system by entering the following command:
$ roswtf
This command generates a report about the health of the system—for example, in the case of a wrong ROS hostname and master configuration, we will have the following report:
Figure 17: roswtf
output in the case of a wrong ROS hostname configuration
We can also run roswtf
on launch files to search for potential issues:
$ roswtf <file_name>.launch
The wiki page of roswtf
is available...