CODEWITHSUNDEEP
matlabbsxfun
Gregor Isack
Gregor Isack

Reputation: 1121

bsxfun error when perform '@minus'

I have two matrices to be subtracted. Let's see the code below.

A=rand(5472,1);
B=rand(1,3);

C= bsxfun(@minus, A, B(:))

I get the error saying that

Non-singleton dimensions of the two input arrays must match each other

Any idea why this error? Thanks!

Upvotes: 0

Views: 156

Answers (1)

user2999345
user2999345

Reputation: 4195

you are trying to apply bsxfun on two column vectors, while you should apply it on one row and one column vector.

bsxfun inputs should have different singelton dimensions (size(arr,dim) == 1). in your example size(A) = [5472,1] and size(B) = [1,3] which is appropriate input (A's singelton dimension is 2 and B's singelton dimension is 1), but when you do B(:) - B's singelton dimension becomes 2, like A's, which throws an error.

do:

A=rand(5472,1);
B=rand(1,3);

C= bsxfun(@minus, A, B)

Upvotes: 4

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