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2015-10-14 07:37:15 -0500 | asked a question | NO PATH ! error and questions to gradient_path.cpp in global_planner Problem Description:I am trying to get a global path based on a 500 * 500 static map with global_planner (indigo). I set up the parameter use_grid_path to be false, so that the path is calculated with a gradient descent method. Goal Pose is fed with the 2D Nav Goal in Rviz. Sometime it works fine by showing the global path. But sometimes it publishes rosconsole [Error] messages repetitively in the terminal, even if a potential map is successfully showed by Rviz. I dug a little bit into the code in gradient_path.cpp http://docs.ros.org/jade/api/global_planner/html/gradient__path_8cpp_source.html#l00068. I think it must failed at row 80 to get this kind of error message. But my static map is not big, and I have already got the potential map. So I do not really understand what is going on here. Question to the code in gradient_path.cpphttp://docs.ros.org/jade/api/global_planner/html/gradient__path_8cpp_source.html#l00068 1.
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These questions troubled me a lot. Please help ~~ Thanks in advance :-) |