改进的张力样条函数插值法程序及其设计方法

Improved Programming for Tensile Spline Function Interpolation Method and Its Design Procedure

编制周期函数(例如闭曲线)的张力样条函数插值法程序,用靠近曲线端点的三点所做的抛物线来确定端点的斜率,以提高程序的插值及绘图精度,较好地解决绘制地形图中各种曲线可能出现尖点或二重点的问题。

By the programming of tensile spline function interpolation method ofperiodic function (e.g., closed curve)--with the slope of the extreme pointdetermined by the parabola formed by the three points adjacent to the extreme point of the curve, interpolation of the program & accuracy of drawing are raised, and the problem of cuspidal point or double point that may possibly emerge in drawing various kinds of curves of topographic map is better solved.