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

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

Answer 1

[Stephen23]

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.

[xosro]

 thanks Mr Stephen Cobeldick
that is very useful for me
again thank you

Answer 2

[Joseph Cheng]

Look at the function repmat() to tile the vector to perform the matrix subtraction.

[xosro]

this order is good but i do not know how uses for my code?