R-squared analysis of scatter plot resulting in NaN

22 views (last 30 days)
Hi there,
I have two variables (eP and T) each of which are 1x 1244 in size. I have created a scatter plot of eP against T and I have fit a line. However, both variables have some NaN values. When I do an r-squared test I get an R squared value of NaN. Does anyone know how to perform an r-squared test and ignore NaN values?

Answers (1)

dpb on 7 Aug 2022
Edited: dpb on 7 Aug 2022
'Pends on how you did it -- show your code for exact answer to that direction, but --
If you have the Statistics TB, then use
mdl=fitlm(x,y,'linear'); % will ignore NaN automagically
rsqO=mdl.Rsquared.Ordinary; % ordinary r-squared
rsqA=mdl.Rsquared.Adjusted; % adjusted r-squared
will handle it transparently.
isOK=all(isfinite([ep T]),2); % indices of those with NaN in neither variable
use ep(isOK), T(isOK) in your other code.




Community Treasure Hunt

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

Start Hunting!