The Linear Fitting Algorithm

No matter the fitting of plane linear or space linear,the application area of linear fitting is very widely.The paper will compre-hensively introduction these two different dimension linear fitting.On the basis of the principle of the least-squares approximation and steepest descent method and the average of the given discrete points,the space linear fitting can obtained,at the same time through a test proved the algorithm is correct.Because the algorithm simultaneously considered the errors of x,y,z direction,so it has the high degree of accuracy;meanwhile the algorithm adopted steepest descent method,so its precision can arbitrary get and the speed of calculation is faster.