HELP ARRAY_FLIP                             David Young, April 2001


LIB *array_flip provides a procedure for obtaining the mirror image of
a two-dimensional array by flipping it about the x-axis or the y-axis
(or both, thus rotating it by 180 degrees).


array_flip(_____array, ______region, __lr, __ud, ______arrout) -> ______arrout
        _____array must be a 2-D array.

        ______region may be a 4-element list giving a region of _____array from
        which to take data (in *boundslist form), or <false> to specify
        the whole of _____array.

        On exit, the same region of ______arrout receives data from _____array. If
        __lr is not <false>, the order of the columns is reversed in the
        output. If __ud is not <false>, the order of the rows is reversed.

        On entry, ______arrout may be an array which is to receive the data,
        in which case its bounds must contain the whole of ______region (or
        the bounds of _____array if ______region is <false>). It must be able to
        accept data of the type stored in _____array. It may be the same
        array as _____array. Alternatively, ______arrout may be <false> on entry,
        in which case a new array with bounds given by ______region (or the
        bounds of _____array if ______region is <false>) and an arrayvector of the
        same type as _____array's arrayvector is created and returned.


--- __________________________$popvision/help/array_flip
--- _________Copyright __________University __of ______Sussex _____2001. ___All ______rights _________reserved.