Comparing 2 linear models

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patrick Joyce 2015-8-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/232768-comparing-2-linear-models

编辑： Walter Roberson 2015-8-7

Hi, I need to compare whether 2 linear models are significantly different from each other. I am fairly new to Matlab and am struggling to understand why I can't get a difference. Here is my code:

Good = isnan(yh_col) + isnan(u_col);
mdl = fitlm(yh_col(Good==0), u_col(Good==0), 'poly3');
figure
plot (mdl)
Goodf = isnan(yf_col) + isnan(ufished_col);
mdlf = fitlm(yf_col(Goodf==0), ufished_col(Goodf==0), 'poly3');
hold on
plot (yf_col, ufished_col, 'bo')
plot (mdlf)
hold off
anova2(mdl, mdlf)