Compare values within a matrix

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Yewande Oni
Yewande Oni am 23 Jun. 2015
Beantwortet: Jan am 23 Jun. 2015
I am comparing two matrices of different dimensions (A and B). I want to find values in B that are within 1 number unit to A. Is there anyway I can do this? B is a smaller matrix than A.
Thanks

Antworten (2)

Ingrid
Ingrid am 23 Jun. 2015
if you mean to find all numbers that are equal to each other when disregarding the numbers behind the comma than you can use something like this
A_r = round(A);
B_r = round(B);
C = intersect(A_r,B_r);
  1 Kommentar
Yewande Oni
Yewande Oni am 23 Jun. 2015
Bearbeitet: Yewande Oni am 23 Jun. 2015
Hi Thanks but I want C to be a matrix of values that are within 1 unit of A, from B.
For example:
A = [31 16 8; 38 4 10]
B = [30 15 7; 34 5 14]
C would index that row 1 of A is a match to row 1 of B, because B is within +/- 1 of A
Is that possible?

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Jan
Jan am 23 Jun. 2015
A = [31 16 8; 38 4 10];
B = [30 15 7; 34 5 14];
nA = size(A, 1);
match = false(1, nA)
for iA = 1:nA
D = abs(bsxfun(@minus, A(iA, :), B)) <= 1.0;
match(iA) = any(all(D, 2));
end

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