plotregression fitlm rsquare difference

Hello

Could you help explain why there is a difference between r-squared calculated using plotregression() and fitlm()?

R-squared: 0.968 from fitlm() R = 0.98364 from plotregression()

The code to produce the two r-squared values is below.

%% set up variable from neural network output = net(input); outputTest = output(tr.testInd); targetTest = target(tr.testInd);

%% first method to produce r-squared plotregression(targetTest,outputTest,'Testing')

%% second method to produce r-squared mdl = fitlm(targetTest,outputTest); r2 = mdl.Rsquared.Ordinary;

Regards

William Bell

Answer 1

[Greg Heath]

>> 0.98364^2

ans =

    0.9675

Thank you for formally accepting my answer

Greg