一个画光滑曲线的例子 对画光滑曲线很有帮助 值得一看-A draw a smooth curve example to draw a smooth curve helpful Worth a visit

曲线数据三次样条平滑 X 一维实数组，存放数据点的横坐标 Y 一维实数组，存放数据点的纵坐标 !DY 一维实数组，存放数据Y的测量误差-Cubic spline smoothing curve data X one-dimensional real array, store data points abscissa

this code delete noise from picture and make it smooth