Create a single variable to store multiple correlation coefficients
显示 更早的评论
I have a 300x7 matrix (A) and a 1x300 row vector (B). How do I calculate the CC for each of the 7 columns in A against the single row in B and store them in a single variable?
回答（2 个）
A = rand(300,7);
B = rand(1,300);
C = corrcoef([A,B']);
C = C(8,1:7)
The correlation coefficiens of each column of A, against B are given in C; Admittedly, if the array A had many columns, then the above is wasteful in terms of CPU cycles. So I could also have done this:
C2 = (B-mean(B))/norm(B-mean(B))*normalize(A - mean(A),1,'norm')
As you can see, the results are the same.
Luca Ferro
2023-3-30
编辑：Luca Ferro
2023-3-30
this would do the trick and store the correlation values in a 300x7 matrix
for rr=1:size(AA,1)
for cc=1:size(AA,2)
CC(rr,cc)=corrcoef(A(rr,cc),B(1,rr));
end
end
The order of the matrix follows the order of A, meaning that CC(1,1) is the correlation of A(1,1) and B(1), and so on
类别
在 帮助中心 和 File Exchange 中查找有关 Correlation and Convolution 的更多信息
2023-3-30
2023-3-30
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
