Regression line that includes x and y errors.

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Research 2023-2-20

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编辑： Matt J 2023-2-20

Hi,

I have x and y data set, and each x and y variables have 5% and 10% uncertainty or error, respectively. How I should find a one regresion or best fit line (Best_y = mx + c) for such a dataset? Here is the dataset. Any thoughts? Thanks.

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Matt J 2023-2-20

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https://ww2.mathworks.cn/matlabcentral/answers/1915410-regression-line-that-includes-x-and-y-errors#answer_1175170

编辑：Matt J 2023-2-20

在 MATLAB Online 中打开

I would recommend linear2dFit() form this FEX download,

https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-for-fitting-conics-and-quadrics

fitResult=linear2dFit([x,y]')

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Research 2023-2-20

Thanks. It runs now. This is a great function. So, just I understand the linear2dFit function, particularly how the function incorporates the error values. In my case, I need to build an array (xy here) that includes +/-x and +/-y error values.This xy array has x and y values also error dx and dy values too. I believe the function then find a best fit through all these points. Thanks!