How to apply linear least squares fit for two entities?

1 ビュー (過去 30 日間)
Amjad Iqbal
Amjad Iqbal 2022 年 7 月 24 日
コメント済み: Matt J 2022 年 7 月 25 日
Dear Researchers,
I have two entities namely sigma (dB) and U (m/s) respectively. As given in attach figure, a linear least squares is used to fit among two entities. I have attached .mat files which contains sigma and U values. I need to fit this curve to analyse Bias and RMS.
I lookforward to receive your valubale suggestions.
Thank you!
  2 件のコメント
Amjad Iqbal
Amjad Iqbal 2022 年 7 月 24 日
As a matter of fact, I have sigma_VH from product and using equation-1 given in reference to obtain U.
In Fig-1 (d), this fit is applied among Sigma_VH and U. According to what they claim is nonlinear. However, I tired is linear. As you can see in attached result.
What's your suggetions and how to fit line among these two?



Matt J
Matt J 2022 年 7 月 24 日
  2 件のコメント
Matt J
Matt J 2022 年 7 月 25 日
Works fine for me
>> fobj=linear2dFit([U_vh1(:)';sigma_o_VH1(:).'])
fobj =
linear2dFit with properties:
p1: [4.7831 -27.4053]
p2: [9.1807 -19.8232]


その他の回答 (0 件)


Find more on Get Started with Curve Fitting Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by