Brain Imaging & Analysis Center

usage: newimage = flip(oldimage,mode)

FLIP does a 180-degree rotation of a matrix (eg. image) variable about either the X axis (vertical flip) or the Y axis (horizontal flip). In both cases the origin for the rotation is the center of the matrix.

MODE selects which rotation to perform:

   MODE = 0     - No rotation, simply copies the matrix
          1     - Flip about the Y axis (flips left to right)
          2     - Flip about the X axis (flips top to bottom)
          4     - Flip about the diagonal (top left to bottom right)

Note: The X and Y axis flips can be combined in a single operation (MODE=3) but neither of these can be combined with a diagonal flip (MODE=4).

See Also:
CIGAL Home, CIGAL Manual, Functions List, Manual Help