二次拟合曲线插值计算 三 次样条曲线插值计算-Quadratic curve fitting curve interpolation calculation of the three interpolation calculation of cubic spline curve interpolation calculation

vb2008开发的完全类似Excel多项式曲线拟合工具(开源),用自带的Excel文件数据celiangzhi.xlsx测试拟合到300次无压力，而Excel最多拟合6次 带GDI+图像绘制功能及图像旋转功能及显示公式（方便插值)-Vb2008 development is similar to that of the Excel polynomial curve fitting tool (Kai Yuan), with the Excel file data fitting wit

拉格朗日插值法进行曲线拟合插值，适合于按照曲线坐标进行相邻点进行插值-Perform interpolation Lagrange polynomial curve fitting, curve coordinates adapted to be adjacent interpolation points