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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.
###########################################################################
  This software is provided subject to the following conditions:
  1. NIWA makes no representations or warranties regarding the
    accuracy of the software, the use to which the software may
    be put or the results to be obtained from the use of the
    software. Accordingly NIWA accepts no liability for any loss
    or damage (whether direct of indirect) incurred by any person
    through the use of or reliance on the software.
  2. NIWA is to be acknowledged as the original author of the
    software where the software is used or presented in any form.
###########################################################################

Modification History


  Mark Hadfield, 1999-08:
    Written.
  Mark Hadfield, 2001-10:
    Updated to IDL2 syntax.



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