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WEDGE

        [GREG2\]WEDGE [Top|Bottom|Left|Right [Size]]  [/SCALING  Lin|Log|Equ
    Min Max] [/LEVEL [Label] ]

    Will  plot  a  WEDGE along the current BOX. WEDGES are used after a PLOT
    command to show the relationship between pixel hues and image values.

    The default position is Right, i.e., on the right side of the  box,  but
    the  other location and size modifiers are self-explanatory. The SCALING
    defaults to the current scaling of the last image PLOTted,  but  can  be
    changed (as in command PLOT) with the /SCALING option.

    The  /LEVEL option will draw levels (as defined by the LEVEL command) at
    their appropriate location on the wedge. The modifier Label  will  label
    the  wedge  axis  with the level values. This is the default (i.e., some
    levels should be defined) for the EQUALIZATION Mode, for which the rela-
    tionship between pixel hues and image values is strongly non-linear.


Gildas manager 2023-06-01