: 1 for row-wise (X), 2 for column-wise (Y), 3 for slice-wise (Z), , 4 for both row and column (XY), 5 for both row and slice (XZ), 6 for both column and slice (YZ) and 7 for three directions (XYZ).
Y
: fliping result
Description
wrev3 is a fliping utility function on time domain.