Question

我正试图从数据中找到相关的列, 并删除相关的列, 其函数如下 :

function [ correlated ] = correlated( data, threshold )
% data is m x m matrix
% threshold is correlation threshold


c=corr(data);
[i,j] = find(c>threshold);
A = [i,j]; 
A=A(find(arrayfun(@(i)length(unique(A(i,:))),1:size(A,1))==size(A,2)),:); 
% as A also includes 1 1; 2 2; 3 3; etc so I used above line that I found somewhere

%      6     4
%      8     4
%      4     6
%      8     6
%      4     8
%      6     8
%     14    11
%     11    14

% 它不应包含6 4 和4 6;我如何去掉所有这些排?

end

它不应包含6 4 和4 6;我如何去掉所有这些排?

Answer 1

uniqueA = unique(sort(A,2),  rows );

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