最小二乘法的例程,可以对数据进行线性拟合.由于源码较短只能进行直线拟合,曲线拟合的源码我稍后上传.-least squares method of programming, with the linear data fitting. As the only source for a shorter fitted to a straight line Curve fitting, I later upload source.

通过根据散点数据，进行差值拟合，绘制等高线。-According to scatter through the data, fitting the difference, drawing contour lines.