作者开发了一种基于三角形网格的绘制等值线图的软件。在开发中着重研究了以下两个问题,并提出了简便、实用的解决方法:(1)在采用最大夹角准则由离散点数据自动生成三角形网格时,给离散点坐标值附近随机微量,以破坏某些四个相邻坐标点可能存在的共圆性质,从而避免生成互相交叉的网格。(2)用删除多余网格记录的方法解决在非凸集中绘制等值线图的问题。 The author has developed a triangular grid based contouring software. In the course of development, we focus on the following two problems and put forward a simple and practical solution: (1) When the triangle grid is generated automatically from the discrete point data using the maximum included angle criterion, a random trace is given to the coordinate value of the discrete point, To undermine the possible co-circular nature of some of the four adjacent coordinate points, thus avoiding the generation of intersecting meshes. (2) to solve the problem of drawing contours in non-convex concentration by removing redundant grid records.