Compare elements of an array with all elements in a matrix
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I have a matrix P (18x10), and one array C (1x10). I want to compare each element of C with each element of each row in P (see if elements in C are bigger than elements in P).
(As an illustration, I want to see if: C(1)> P(1,1); C(1)> P(1,2); ... C(2)>P(2,1); C(2)>P(2,2)...).
P = randn(18,10);
C = randn(1,10);
I tried to do this as follows:
for a = 1:length(C)
for m = 1:size(P,2)
for m_row = 1:size(P,1)
logvec= length(C(a))>P(m_row, m:end);
end
end
end
I get the following error: Unable to perform assignment because the left and right sides have a different number of elements.
I expect as an output a matrix 18x10, with 0s and 1s.
I'd appreciate your help! Thank you!
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采纳的回答
KSSV
2021-7-27
No loop needed. You can use straight away like shown:
P = randn(18,10);
C = randn(1,10);
C1 = repmat(C,18,1) ;
idx = C1 > P
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