Use of corrcoef function

Question

Theodoros Stylianides 2018-1-27

0
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https://ww2.mathworks.cn/matlabcentral/answers/379267-use-of-corrcoef-function

回答： Abhishek Ballaney 2018-1-29

Hello all,

I might be asking an arbitrary one today.

I am trying to familiarise myself to the use of corrcoef function so here it goes: Assume N is a given matrix and X & Y correspond to different columns (N(:,1) and N(:,2) in that array:

I'm struggling to understand what corrcoef (x y) and corrcoef(N) result to.

The code (an extract) i use for corrcoef (x y) is below:

for i=2:SampleLength; 
    for j=2:SampleLength; 
  X=N([a:b],i);  %a , b define specific boundaries
  Y=N([a:b],j)
[Correlation,Significance]=corrcoef(X,Y);
test(i-1,j-1)=Correlation(2,1);
sign(i-1,j-1)=Significance(2,1);
end
end