cols- flips the column about ncol;
dc= specifies the floating value of the column shift (0.0 default).
dr= specifies the floating value of the row shift (0.0 default).
inverse - subtracts the row and column shifts rather than adds them. Also changes the sign of the rotation.
scale= scales the rows and columns by the specified factor. The multiplication is done around the origin.
rot= rotates the list by the specified number of degrees around the origin (0,0). You can change the origin by the nrow and ncol so the origin becomes (nrow/2, ncol/2).
nmatch= is ignored but put in as a courtesy for compatibility with match.
ncol= sets the total number of columns in image to set the origin(default:0)
nrow= sets the total number of rows in image to set the origin(default:0)
rms= adds gaussian error to row and columns.
rows- flips the row about nrow.
seed= changes the seed value for scramble.