fitting a function with 3 parameter
4 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello everyone;
I have some data include x,y,z,t.
how can I fitting this data on this Equation: t= a*x+b*y+c*z
i need a,b,c .
0 commentaires
Réponses (1)
Bjorn Gustavsson
le 7 Avr 2019
This is a simple linear fitting problem, you solve it this way:
M = [x(:),y(:),z(:)]; % creating a matrix of all your independent parameters giving you a
% vector-matrix-versio of your equation:
% t = M*abc(:);
abc = M\t;
You can generalize this for arbitrary fitting-functions, just expand M with columns for x^2, sin(w*y) and the like. Matlab has all sort of fitting functions more general and agile. Have a look at polyfit, lscov and others
HTH
0 commentaires
Voir également
Catégories
En savoir plus sur Get Started with Curve Fitting Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!