1.Matlab里面没有提供直接以半径和圆心位置画圆的程序，该程序可以实现此功能，命令格式为：circle(radius,x0,y0, color )

2.一种基于势函数的路径搜索算法，能实现有障碍物环境中指定起点和终点位置的最短路径搜索。-1.Matlab which does not provide the location directly in the center circle radius and the program, the program can achieve this functionality, the command format is: circle (radius, x0, y0,　color )

2.Potential function based on the path search algorithm, to achieve environmental obstructions start and end position specified in the shortest path search.