Thread Subject: row wise subtraction

I am trying to see if there is a way to subtract a 1x92 vector from each row of a 1000x92 vector without a for loop.

for example: I want to subtract row 1 from all the rows.

     1 1 1 1 1
     2 2 2 2 2
     3 3 3 3 3
     4 4 4 4 4
     5 5 5 5 5

to take the above matrix to

     0 0 0 0 0
     1 1 1 1 1
     2 2 2 2 2
     3 3 3 3 3
     4 4 4 4 4

shouldn't be that tough right?

"Camron Call" <camroncall@gmail.cam> wrote in message <hekbf8$5n6$1@fred.mathworks.com>...
> I am trying to see if there is a way to subtract a 1x92 vector from each row of a 1000x92 vector without a for loop.
>
> for example: I want to subtract row 1 from all the rows.
>
> 1 1 1 1 1
> 2 2 2 2 2
> 3 3 3 3 3
> 4 4 4 4 4
> 5 5 5 5 5
>
> to take the above matrix to
>
> 0 0 0 0 0
> 1 1 1 1 1
> 2 2 2 2 2
> 3 3 3 3 3
> 4 4 4 4 4
>
> shouldn't be that tough right?

Have a look at bsxfun

A = [1 1 1 1 1
      2 2 2 2 2
      3 3 3 3 3
      4 4 4 4 4
      5 5 5 5 5 ];

B = bsxfun(@minus,A,A(1,:));