plotregression fitlm rsquare difference

2013 12 24
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更新时间：2013 12 24
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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

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Greg Heath
Greg Heath 2013-12-24

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>> 0.98364^2
ans =
0.9675
Thank you for formally accepting my answer
Greg

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