gmapping tutorial roswiki confusion
So i entered the tutorial from ROSwiki so i can start creating my own map (http://wiki.ros.org/slam_gmapping/Tut... The tutorial start with the command rosmake gmapping ..
The question : 1) what is gmapping . Is it a package, or something like that ,that i have to download first . 2) is there anything that i have to do or understand before starting this tutorial