Renaming Fit rsquare value

3 vues (au cours des 30 derniers jours)
Petch Anuwutthinawin le 26 Juin 2021
Commenté : Scott MacKenzie le 26 Juin 2021
I have made a fit for a set of data. It returns an rsquare value, which I have to rename to R1.
%This is the code for the fit
ft1=fittype('m*x+b');
[Fit1,gof]=fit(A',T',ft1)
%Below is the output for gof. I need to rename rsquare to R1.
gof =
struct with fields:
sse: 2.1928e+03
rsquare: 0.0121
dfe: 8
rmse: 16.5561
0 commentairesAfficher -2 commentaires plus anciensMasquer -2 commentaires plus anciens

Connectez-vous pour commenter.

Réponse acceptée

Scott MacKenzie le 26 Juin 2021
ft1=fittype('m*x+b');
[Fit1,gof]=fit(A',T',ft1)
R1 = gof.rsquare
4 commentairesAfficher 2 commentaires plus anciensMasquer 2 commentaires plus anciens
Petch Anuwutthinawin le 26 Juin 2021
I have multiple fits made, and have to rename each rsquare output from each fit with a different name.
ft1=fittype('m*x+b');
[Fit1,gof]=fit(A',T',ft1)
%% Second order poly
ft2=fittype('a*x.^2+b*x+c');
[Fit2,gof]=fit(A',T',ft2)
%% Third order poly
ft3=fittype('a*x.^3+b*x.^2+c*x+d');
[Fit3,gof]=fit(A',T',ft3)
%The rsquare for Fit1 has to be named R1, the rsquare for Fit2 has to be
%named R2 etc.
Scott MacKenzie le 26 Juin 2021
I notice that you are not renaming the gof variable returned in each call to fit. So, after the second call, you no longer have gof from the first call. That's fine, but if you want to have all three R-squared values after the three calls to fit, you need to save them in some way. Here's one approach:
ft1=fittype('m*x+b');
[Fit1,gof]=fit(A',T',ft1)
R1 = gof.rsquare; % save 1st R-squared value
%% Second order poly
ft2=fittype('a*x.^2+b*x+c');
[Fit2,gof]=fit(A',T',ft2)
R2 = gof.square; % save 2nd R-squared value
%% Third order poly
ft3=fittype('a*x.^3+b*x.^2+c*x+d');
[Fit3,gof]=fit(A',T',ft3)
R3 = gof.rsquare; % save 3rd R-squared value

Connectez-vous pour commenter.

Catégories

En savoir plus sur Probability Distributions 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!

Translated by