The paper mainly expounds the principle of automatic name placement of area element by center array method, the algorithm of polygon pretreatment, the method of getting array rotating center and the algorithm of name placement positioning line.

• 摘要本文阐述了中心阵列法进行面状要素自动注记的原理、多边形预处理算法、求取阵列旋转中心的方法和求取注记定位线的算法。