Comparing two arrays of different length
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Majbah
le 17 Nov 2014
Commenté : Josep Llobet
le 5 Oct 2021
Hi,
I have two arrays like, A=[11 11 2 3; 5 2 6 9] and B=[11 3; 2 9]. I want to know the indices of array A where the column of B is equal to column of A. In this case, the indices are [2 4].
How can I do that?
Thanks in Advance.
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Giorgos Papakonstantinou
le 17 Nov 2014
You could this to find it:
idx = ismember(A', B', 'rows');
c = 1:size(A, 2);
d = c(idx); % is your answer
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Josep Llobet
le 5 Oct 2021
indeed, maybe
ismember(0, unique(idx))
used with 0 (no-coincident) or 1 (coincident), may be useful.
Then combined with
length(unique(idx))
For to know about the totallity of coincidences
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