# Getting off diagonals after calculating a correlation matrix

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Douglas Brenner 2018 年 10 月 11 日
The code below gives the first off diagonals of the correlation computation in line 6. How do I get the others?
testm1 = [1,2,3,4,5,6,7,8;2,4,5,7,10,6,7,8]; testm2 = [1,2,3,4,5,6,7,8;3,1,4,3,0,1,2,3]; num_pts = 8; testm1= transpose(testm1); testm2= transpose(testm2); corr = testm1(:,2)*testm2(:,2)' main_diag = testm1(:,2).*testm2(:,2) i = 1; diags1{i} = testm1(i:num_pts - i,2).*testm2(i+1:num_pts-i + 1,2); disp('off diagonal above') disp(diags1{i}) diags2{i} = testm2(i:num_pts - i,2).*testm1(i+1:num_pts-i + 1,2); disp('off diagonal below') disp(diags2{i})
corr = 6 2 8 6 0 2 4 6 12 4 16 12 0 4 8 12 15 5 20 15 0 5 10 15 21 7 28 21 0 7 14 21 30 10 40 30 0 10 20 30 18 6 24 18 0 6 12 18 21 7 28 21 0 7 14 21 24 8 32 24 0 8 16 24 main_diag = 6 4 20 21 0 6 14 24 off diagonal above 6 4 20 21 0 6 14 off diagonal below 12 5 28 30 0 7 16

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