Least Squares Method for best line fitting
4 ビュー (過去 30 日間)
I have a set of X and Y coordinates data taken from Laser scanning
X=[x1 x2 x3 x4 .....] Y=[y1 y2 y3 y4 .....]
Elements of both the X and Y include some errors.
I tried to find the best fitting line using polyfit and polyval command in matlab, but it can use only to calculate the Yhat w.r.t. X data.
At the end it will give X and Yhat only.
If I want to know calculate both the Xhat and Yhat, how can I use polyfit and polyval ?
Torsten 2015 年 2 月 26 日
I think you are talking about "orthogonal linear regression".
Polyfit is not suited for this kind of Fitting ; it assumes there are no errors in the independent variable.