matrix vector substraction

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osman
osman 2011-10-11
z=[1,2,3,4,5,6,7,8;4,5,6,7,8,9,0,1;1,2,3,4,5,6,7,8;10,11,12,13,0,0,0,0];
y=[1,2,3,4];
how can i find z-y without loops thanks.

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采纳的回答

Sean de Wolski
Sean de Wolski 2011-10-11
M = bsxfun(@minus,z,y')
assuming you want each row of y transpose (or column of y as it is) subtracted from each row of z. Otherwise you'll have to define how you want the subtraction to works since z/y are different sizes.

更多回答（2 个）

Amey
Amey 2011-10-11
To do matrix subtraction, dimensions of both the matrices should be same. Here its not the case. Matrix z is 4*8 while matrix y is 1*4
osman
osman 2011-10-11
i want each row of y subtracted from each row of z.
  1 个评论
Sean de Wolski
Sean de Wolski 2011-10-11
each column of y as it is, i.e. each row of y-transpose? See my answer.

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