直线插补，实现改进逐点比较法的直线插补，简便好用-Linear interpolation, the realization of improve-by-point comparison of the linear interpolation, simple and easy to use

内容包括:解线性代数方程组,插值,数值积分,特殊函数,函数逼近,特征值问题,数据拟合,方程求根和非线性方程组求-Include: solving linear algebraic equations, interpolation, numerical integration, special functions, function approximation, eigenvalue problem, the data fit the equation Roots and nonlinear eq

在这个程序中采用线性插值的方法利用动态圆，在每一个节点上画圆，搜索到三个已知点后结束求出系数用来计算此节点的高程-In this program, linear interpolation method using dynamic circle, draw a circle at each node, the search to three known points, calculated after the end of the coefficient used to calculate th