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MGH_MAKE_CT

MGH_MAKE_CT

Name


  MGH_MAKE_CT

Purpose


  This function constructs a colour table by linear interpolation between
  a set of specified control points

Category


  Graphics
  Color Specification.

Calling Sequence


  Result = MGH_MAKE_CT(Indices, Colors)

Positional Parameters


  indices (input, numeric vector)
    A vector, dimensioned [n[ where n >= 2, containing a list of
    control point indices. Elements must be monotonically increasing
    and in the range [0,255].
  colors (input, numeric array or string vector)
    A list of control-point colors. If numeric, it must be
    dimensioned [3,n]. If of string type, it must be dimensioned [n]
    and is converted to numeric rgb form by the MGH_COLORS function.

Keyword Parameters


  NAME (input, scalar string)
    A string to be used as the name of the color table. Default ''.

Return Value


  The function returns a colour table in the form of an anonymous
  structure with tags NAME (string), N_COLORS (integer), RED (byte
  array), GREEN (ditto) and BLUE (ditto). N_COLORS is equal to one
  plus the final value in the list of indices.
###########################################################################
  Copyright (c) 1999-2012 NIWA:
  http://www.niwa.co.nz/
  Licensed under the MIT open source license:
  http://www.opensource.org/licenses/mit-license.php
###########################################################################

Modification History


  Mark Hadfield, 1999-08:
    Written.
  Mark Hadfield, 2001-10:
    Updated to IDL2 syntax.
  Mark Hadfield, 2012-12:
    Surther updates.



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