Lidar measurement to grid map

[horverno]

This example shows how to convert a 2D range measurement to a grid map. This is the basis of creating occupancy grid map eg for SLAM.

[coveralls]

Pull Request Test Coverage Report for Build 869

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 47 unchanged lines in 10 files lost coverage.
• Overall coverage decreased (-0.02%) to 90.421%

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Files with Coverage Reduction	New Missed Lines	%
PathPlanning/LQRRRTStar/lqr_rrt_star.py	1	76.09%
PathPlanning/ClosedLoopRRTStar/pure_pursuit.py	1	96.09%
PathPlanning/ClosedLoopRRTStar/closed_loop_rrt_star_car.py	3	80.31%
PathPlanning/ReedsSheppPath/reeds_shepp_path_planning.py	4	90.41%
ArmNavigation/n_joint_arm_to_point_control/n_joint_arm_to_point_control.py	4	93.59%
PathPlanning/BatchInformedRRTStar/batch_informed_rrtstar.py	5	81.5%
PathPlanning/AStar/a_star.py	5	96.32%
Localization/unscented_kalman_filter/unscented_kalman_filter.py	6	92.19%
PathPlanning/Dijkstra/dijkstra.py	7	94.85%
PathPlanning/DynamicWindowApproach/dynamic_window_approach.py	11	88.7%

Totals
Change from base Build 855:	-0.02%
Covered Lines:	6608
Relevant Lines:	7308

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💛 - Coveralls

[AtsushiSakai]

This pull request introduces 3 alerts when merging affcc3f into 9d1a05a - view on LGTM.com

new alerts:

• 2 for Unused local variable
• 1 for Unused import

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Comment posted by LGTM.com

[AtsushiSakai]

This pull request introduces 1 alert when merging 5d6927a into 9d1a05a - view on LGTM.com

new alerts:

• 1 for Unused local variable

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Comment posted by LGTM.com

[AtsushiSakai]

@horverno Thank you so much for your PR. It is interesting. However, opencv dependency is not acceptable for me. Could you remove it?

[horverno]

@AtsushiSakai, thanks, will check out if i can get rid of opencv

[kyberszittya]

Only FloodFill was used from OpenCV, I've got rid of it.

[AtsushiSakai]

@horverno @kyberszittya Thank you so much for you guys contribution!!.