函数功能：画圆
语法：
viscircles(centers,radii)
viscircles(ax,centers,radii)
viscircles(___,Name,Value)
h = viscircles(___)
https://ww2.mathworks.cn/help/images/ref/viscircles.html
标签：函数,radii,matlab,viscircles,___,centers,画圆
来源： https://www.cnblogs.com/yibeimingyue/p/11007741.html