Final Project of EECS476
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/selected_points https://github.com/wsnewman/ros_helper_packages/tree/master/rviz_plugin_selected_points_topic
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/selected_points_publisher https://github.com/tu-rbo/turbo-ros-pkg/tree/master/selected_points_publisher
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/cliected_point https://github.com/ros-visualization/rviz/blob/groovy-devel/src/rviz/default_plugin/tools/point_tool.h
After you compile everything, run the launch file
$ roslaunch display_mobot_view display_mobot_view.launch
which gives you a show of a colored point cloud.
Then, you can pick up a tool among the three to select a point / points and observe the results in the screen.