Compare values of array of matrix 5x5x106
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Hi!
I have a array of logical matrix 5x5x106 (attached file): I want to compare every logical matrix with the others to find common elements end save them. I try this code:
for k=1:106
if valueNoZeros(:,:,k)==valueNoZeros(:,:,k+1)
a(:,:,k)=1;
end
end
and also this
for k=1:106
if valueNoZeros(:,:,k)==valueNoZeros(:,:,k+1)
for i=1:5
for j=1:5
a(i,j,k)=1;
end
end
end
end
but it gives me an error: 'Conversion to cell from double is not possible'
Can you help me?
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Thorsten
le 20 Nov 2015
Modifié(e) : Thorsten
le 20 Nov 2015
If you want to compare every matrix with each other, you have 5565 pairs to compare:
Npairs = nchoosek(1:106,2);
N = size(Npairs, 1);
A = zeros(5,5,N);
for i = 1:N
A(:,:,i) = valueNoZeros(:,:,Npairs(i,1)) == valueNoZeros(:,:,Npairs(i,2));
end
If you just want to compare a matrix with the following matrix, you have 105 comparisons:
N = 106 - 1;
for i = 1:N
A(:,:,i) = valueNoZeros(:,:,i) == valueNoZeros(:,:,i+1);
end
2 commentaires
Thorsten
le 20 Nov 2015
Modifié(e) : Thorsten
le 20 Nov 2015
valueNoZeros~=0 gives an 5x5x106 logical array that is logical 1 if valueNoZeros is one (valueNoZeros~=0) else 0. So this is just the same as valueNoZeros! Moreover, it is a whole array, which is only true if all elements are true; in the example, it is never true...
So if you want A to be 1 if there is a one in two matrices, use
A(:,:,i) = valueNoZeros(:,:,Npairs(i,1)) & valueNoZeros(:,:,Npairs(i,2));
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