Curve fitting with a custom equation

3 ビュー (過去 30 日間)
Antonio
Antonio 2012 年 11 月 1 日
Hi! I have a set of points and I'd like to make a curvefitting using this custom equation:
y=(exp(a*x))*(1/((((20000/(1-0.5^2)).^b)).*0.7));
How can I do this with the built-in toolbox Curve fitting (even without it!)?
Thanking you for your attention, I'm looking forward for your answers.

回答 (1 件)

Matt J
Matt J 2012 年 11 月 1 日
If you have neglgible noise in your data, you can take the log of both sides and convert your model into a linear one
logy=a*x+b*log(constants)
Then you can just use a linear solver (backslash, linsolve, etc...)

カテゴリ

Help Center および File ExchangeLinear and Nonlinear Regression についてさらに検索

Community Treasure Hunt

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

Start Hunting!

Translated by