MATLAB: How i subtract a vector( 1*n-dim ) from columns of a matrix (n*n-dim) without uses for , end and orders likes these

no attempt

i wish subtract a vector from columns of a matrix while my code is not great. example: a =
     1     3
     4     2
>> a-[1 2]= 0 1 3 0

Best Answer

Use bsxfun for this:
>> A = [1, 3; 4, 2]
A =
     1     3
     4     2
>> B = [1, 2]
B =
     1     2
>> bsxfun(@minus, A, B)
ans =
     0     1
     3     0
bsxfun expands any scalar dimensions to make the input variables the same size, then performs the specified operation. It is also much more efficient than using repmat.
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