FLIPUD

 

 Flip matrix in the up/down direction.

  FLIPUD(X) returns X with columns preserved and rows flipped

  in the up/down direction.  For example,

 

 

  X = 1 4      becomes  3 6

      2 5               2 5

      3 6               1 4

 

 

  See also FLIPLR3MA9YIY, ROT903SZQIN.