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Re: How To invert ColorFunction

  • To: mathgroup at smc.vnet.net
  • Subject: [mg106725] Re: How To invert ColorFunction
  • From: dr DanW <dmaxwarren at gmail.com>
  • Date: Fri, 22 Jan 2010 05:36:06 -0500 (EST)
  • References: <hj9e1b$k6g$1@smc.vnet.net>

Vladimir,

ColorFunction->"Rainbow"

is shorthand for

ColorFunction -> Function[{x, y, z}, ColorData["Rainbow"][z]

where z is the value of the dependent variable scaled to be between 0
and 1.  So, to invert the colors, flip the scale to z is scaled to be
between 1 and 0:

ColorFunction -> Function[{x, y, z}, ColorData["Rainbow"][1 - z]]

To learn more, look up ColorFunction, ColorData, ColorDataFunction,
and Color Schemes in the Doc Center.

Daniel


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