Is there any way to calculate R^2 (correlation coefficient) in Matlab directly?

I would like to calculate R^2 in easy way in matlab? How can I do that?

Thanks in advance

Riyadh

Answer 1

[the cyclist]

The corrcoef function calculates correlation.

[Riyadh Muttaleb]

Thank you for your reply, I would like to get on one number that less than 1. this doesn't.!

[the cyclist]

I'm confused by your comment. For example,

x1 = [1; 2; 3; 4];
x2 = [7; 5; 3; 2];

correlation = corr(x1,x2)

gives a single, negative number for the correlation of these two vectors of numbers.

[Riyadh Muttaleb]

Thank you so much!