How can calculate R-Square using lsqcurvefit

24 次查看（过去 30 天）
Alain Gil Del Val
Alain Gil Del Val 2020-4-28
评论： Star Strider 2023-5-11
Dear Sir/Madam,
I would appreciate how can calculate R-Square using lsqcurvefit or how can calculate this parameter between the real profile and adjusted profiles.
Thanks
Regards

请先登录，再回答此问题。

回答（1 个）

Star Strider
Star Strider 2020-4-28
You have to calculate it yourself, however the calculation (for vector independent and vector dependent variables) is straightforward:
SStot = sum((y-mean(y)).^2); % Total Sum-Of-Squares
SSres = sum((y(:)-yfit(:)).^2); % Residual Sum-Of-Squares
Rsq = 1-SSres/SStot; % R^2
Here, ‘y’ is the dependent variable, and ‘yfit’ is the fitted value of the dependent variable from the regression.

类别

在 Help Center 和 File Exchange 中查找有关 Nonlinear Optimization 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by