% @(#)modifylut.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:43:45
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%.COPYRIGHT  (c)  1990 European Southern Observatory
%.IDENT      modifylut.hlq
%.AUTHOR     KB, IPG/ESO
%.KEYWORDS   MIDAS, help files, MODIFY/LUT
%.PURPOSE    On-line help file for the command: MODIFY/LUT
%.VERSION    1.0  07-SEP-1989 : Creation, KB
%----------------------------------------------------------------
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SECTION./LUT
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MODIFY/LUT					07-SEP-1998  KB
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MODIFY/LUT [method] [colour] [prflag]
	modify the currently active LUT
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Purpose: 
          Modify the currently active colour lookup table (LUT).
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Syntax: 
          MODIFY/LUT [method] [colour] [prflag]
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          method = BAND, for overlaying a one colour band on the LUT
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                 = ROTATE, for rotating the offset of one or all colours of LUT
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                 = GRAPH, for changing interactively slope and intercept of LUT
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                 = SQEEZE, for squeezing/stretching of LUT and moving the offset
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                 = HSI, for modifying in H(ue), S(aturation),I(ntensity) space;
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                 defaulted to BAND
\ap\pa
          colour  = colour(s) we want to work with:
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            for BAND: RED, GREEN, BLUE, WHITE, DARK, YELLOW, PINK,
                      BROWN, ORANGE and VIOLET (default = RED)
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            for ROTATE: RED, GREEN, BLUE or ALL (default = ALL)
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            for GRAPH: RED, GREEN, BLUE or ALL (default = ALL)
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            for SQUEEZE not applicable - all colours are affected
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            for HSI: HUE, SATURATION or INTENSITY (default = HUE)
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          prflag = only used for method BAND:
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            Y(es) or N(o) for displaying the intensity interval corrsponding to
            the chosen band, defaulted to No
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See also:
          MODIFY/ITT, TUTORIAL/LUT, DISPLAY/LUT, GET/LUT, LOAD/LUT
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          EQUALIZE/HISTOGRAM
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Note:
          Use the or arrow keys to modify the LUT. Press the EXIT button on the
          mouse (rightmost button) to terminate.
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          For the method BAND you can also enter the colour as three integers,
          like r,g,b defining the RGB values or as 0xrrggbb in hex. notation.
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          If invalid method or colour is entered, the defaults are taken.
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          For method ROTATE you must start rotating towards the right.
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          To save your new, modified LUT use the command GET/LUT which will
          create a copy of the current LUT in MID_WORK.
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Examples:
\ex
          MODIFY/LUT ROTATE GREEN
            Rotate only the green colour of current LUT.
\xe \ex
          MODIFY/LUT BAND 255,127,0
            Put an orange band over LUT.
\xe \ex
          MODIFY/LUT band 0xff7f00
            Same as above specifying the colour in hex. notation.
\xe \sxe