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       COMMAND

       llllggggsssshhhhiiiifffftttt,,,, llllttttsssshhhhiiiifffftttt ---- sssshhhhiiiifffftttt ddddaaaattttaaaa

       USAGE

       llllggggsssshhhhiiiifffftttt [++++/----]_c_o_u_n_t

       llllttttsssshhhhiiiifffftttt [++++/----]_c_o_u_n_t

       ++++       Shift in a positive sense.

       ----       Shift in a negative sense.

       _c_o_u_n_t   The distance to shift, in latitudes or longitudes.

       DESCRIPTION

       LLLLggggsssshhhhiiiifffftttt and llllttttsssshhhhiiiifffftttt are another pair of essentially
       analogous commands having very much the same command
       structure.  They differ only in the orientation of their
       effect, longitudinal and latitudinal respectively.  Both
       essentially reorder the successive profiles and slices with
       respect to the origin of the coordinate grid.  Subsequent
       displays or other operations on the image produce an
       apparent repositioning of image features to some more
       convenient or useful location.

       LLLLggggsssshhhhiiiifffftttt rotates that portion of the current image lying
       inside the current latitude range horizontally with respect
       to its original orientation.  This command is often useful
       for such purposes as adjusting two or more images (perhaps
       two regions of the same image) so that some common or
       related feature of the two is either aligned or perhaps
       separated by a prescribed number of longitudes.

       You must determine and set the ranges of latitude and
       longitude within which the shift is to be effective, the
       number of longitudes by which the image is to be shifted and
       the direction (clockwise positive) of the shift necessary to
       achieve the desired relative longitudinal alignment.  This
       integer number of longitudes, positive or negative, then
       becomes the _c_o_u_n_t argument of the command.

       Example: llllggggsssshhhhiiiifffftttt ----222255556666

       Lgshift operates only within the current latitude/longitude
       range window.  All radii within the current range window are
       shifted laterally with wrap around at the longitude limit
       toward which the data is being shifted and reentry at the
       longitude limit away from which the shift occurs.  Only when











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       the longitude range is set at its full-image value (0 to
       511) is the original relative ordering of successive
       longitudes of data values preserved.  In this latter case,
       the wrap around is equivalent to the successive data values
       being shifted as a "disc" within a a fixed cylindrical
       coordinate frame.

       LLLLttttsssshhhhiiiifffftttt translates that portion of the current image lying
       inside the current range of longitudes vertically with
       respect to its initial orientation.  Like llllggggsssshhhhiiiifffftttt, this
       command is often useful for such purposes as adjusting two
       or more images so that some common feature(s) lies a desired
       vertical distance above or below some reference datum.
       Downward translation of an image which has been scaled
       significantly greater than 1:1 is often required in order to
       display or print plots of the topmost portions of the scaled
       image and this is easily effected by llllttttsssshhhhiiiifffftttt.

       You must determine and set the ranges of latitude and
       longitudes within which the shift is to be effected, the
       number of latitude intervals by which the image is to be
       shifted and the direction (upward positive) of the shift.
       Both of the latter should be determined relative to some
       feature whose latitude is known such as the very bottom of
       the image space, i.e., latitude 0.  This integer number of
       latitudes, positive or negative, becomes the argument of
       llllttttsssshhhhiiiifffftttt and will result in an upward or downward shift
       respectively by the number of latitudes specified.

       Example: llllttttsssshhhhiiiifffftttt ----22225555

       Analogous to llllggggsssshhhhiiiifffftttt, the llllttttsssshhhhiiiifffftttt command operates only
       within the current latitude/longitude range window.  All
       radii within the current range window are shifted vertically
       with wrap around at the latitude limit toward which the data
       is being shifted and reentry at the latitude limit away from
       which the shift occurs.  Only when the latitude range is set
       at its full-image value (0 to 255) is the original relative
       ordering of successive latitudes of data values preserved.
       In this latter case, the wrap around is analogous to that
       for llllggggsssshhhhiiiifffftttt.

       CAVEATS

       Remember that the shifts occur only within the current lt/lg
       range window with wrap around at the bounding longitudes of
       the window.












