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2015-08-03 08:11:44 -0500	received badge	● Good Answer (source)
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2015-07-19 19:51:25 -0500	commented answer	Scan message must contain angles from -x to x I tested @Vincent Rabaud's patch and found gmapping didn't run as expected. It printed "Registering First Scan" then stopped updating. There was no other output until being killed.
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2015-07-15 22:32:04 -0500	answered a question	Scan message must contain angles from -x to x This error is due to recent change in gmapping package. This can be fixed by modifying and recompiling the gmapping package as follows: `$ wget http://packages.ros.org/ros/ubuntu/pool/main/r/ros-indigo-gmapping/ros-indigo-gmapping_1.3.7.orig.tar.gz $ mkdir -p ~/catkin_ws/src $ cd ~/catkin_ws/src $ catkin_init_workspace $ tar xvf ../../ros-indigo-gmapping_1.3.7.orig.tar.gz $ mv ros-indigo-gmapping-1.3.7/ gmapping $ gedit gmapping/src/slam_gmapping.cpp` Change line 409 from: `if (fabs(fabs(scan.angle_min) - fabs(scan.angle_max)) > FLT_EPSILON)` to: `if (fabs(fabs(scan.angle_min) - fabs(scan.angle_max)) > 0.003) // this is the value for Kinect` Save and close the file. Go back to commandline: `$ cd .. $ catkin_make $ sudo cp devel/lib/gmapping/slam_gmapping* /opt/ros/indigo/lib/gmapping/` This works for me.
2015-07-15 22:09:48 -0500	commented question	Scan message must contain angles from -x to x I have the same problem. This is the new behaviour in the latest ros-indigo-gmapping-1.3.7 package. CHANGELOG.rst says: .... * Added cfloat include * Change arbitrary constant to FLT_EPSILON * Added check that scan goes from -x to x .......