Author: Thomas Peyrucain < thomas.peyrucain@pal-robotics.com >
Maintainer: Jordi Pages < jordi.pages@pal-robotics.com >
Support: tiago-support@pal-robotics.com
Source: https://github.com/pal-robotics/pmb3_tutorials.git
 Please ask about problems and questions regarding this tutorial on answers.ros.org. Don't forget to include in your question the link to this page, the versions of your OS & ROS, and also add appropriate tags. |
Create a map with gmapping
Description: This tutorial shows how to create a map of the environment using the range-finder on the ARan Base.Keywords: Mapping, laser scan matching
Tutorial Level: INTERMEDIATE
Next Tutorial: Localization
Contents
Purpose
This tutorial shows how to create a laser map of the environment with the public simulation of ARan Base using gmapping. The map is required to use afterwards AMCL based localization to match laser scans with the map to provide reliable estimates of the robot pose in the map.
Pre-Requisites
First make sure that the tutorials are properly installed along with the ARan Base simulation, as shown in the Tutorials Installation Section.
Execution
First of all open two consoles and source ARan Base public simulation workspace in each one
source ./devel/setup.bash
In the first console launch the following simulation
roslaunch pmb3_2dnav_gazebo pmb3_mapping.launch public_sim:=true
Note that a rviz will also show up in order to visualize the mapping process.
In the second console launch the keyboard teleoperation node
rosrun key_teleop key_teleop.py
By pressing the arrow keys on this console drive ARan Base around the world. To have a good quality map you could follow close loop trajectories, as show below:
The map being created will be shown. When the world has been fully mapped, as in the below example:
Press 'q' in the key_teleop console and save the map as follows
rosservice call /pal_map_manager/save_map "directory: ''"
The service call will save the map in the following folder
~/.pal/pmb3_maps/configurations/
Now ARan Base is ready to do autonomous localization and path planning using the map. See next tutorial on how to make use of maps to perform autonomous navigation.
