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namespace.md

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Namespace

ROS allow you to write program in abstract level and control the robot, the communicaton happens through topics.

For a robot it may have information like battery level, position, odometry, sensor data, etc....

Consider your are naming the topics like

myrobot/battery_status
myrobot/position
myrobot/gps_position

If I have to launch two robots, i can launch with another file, but it is redundent and have to hard code names.

my_new_robot/battery_status
my_new_robot/position
my_new_robot/gps_position

As a solution namespace comes, for first robot set the namespace as ns="myrobot" and for second robot set namespace as ns="my_new_robot"

Resources

Real Example