how to calculate Correlation coefficient 'R' value smae as displayed in my regression plot using Neural networks?

Hi there, would anybody like to explain me how to calculate the same "R" value as displayed in grapgh kindly see attachment.

Answer 1

[KSSV]

Read about functions regression and corr2

th = linspace(0,2*pi) ;
x1 = sin(th) ;
x2 = sin(th)+rand(size(th)) ;
plotregression(x1,x2)
% Method 1
regression(x1,x2)
% MEthod 2
corr2(x1,x2)

[Saba Yousaf]

thank you so much for your quick response but this code shows 'R' value R=0.9367,but in graph it is different .

[KSSV]

Ha ha..they are same ...the accuracy is different...if you round you will get the same.

[Saba Yousaf]

this is only for validation . how could i calculate for testing training and all?

[KSSV]

Use the same function with your inputs....simple.

[Saba Yousaf]

okay thanks