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Re: How To invert ColorFunction

  • To: mathgroup at smc.vnet.net
  • Subject: [mg106737] Re: [mg106719] How To invert ColorFunction
  • From: Leonid Shifrin <lshifr at gmail.com>
  • Date: Fri, 22 Jan 2010 05:38:26 -0500 (EST)
  • References: <201001211131.GAA20635@smc.vnet.net>

Hi Vladimir,

This seems to do what you want:

RevolutionPlot3D[c4*z4[rho, theta], {rho, 0, 1}, {theta, 0, 2*Pi},
 ColorFunction -> (ColorData["Rainbow"][1 - #3] &)]

Regards,
Leonid


On Thu, Jan 21, 2010 at 2:31 PM, Vladimir <svetlana_47 at yahoo.de> wrote:

> Hi everybody,
>
> I am plotting Zernike-Polynomials like this:
>
> ---------
> c4 = 1;
>
> z4[rho_, theta_] := rho^2*Cos[2*theta]
>
> RevolutionPlot3D[c4*z4[rho, theta], {rho, 0, 1}, {theta, 0, 2*Pi},
>  ColorFunction -> "Rainbow"]
> ---------
>
> To be able to compare the plot to measured data from an
> interferometer, I would like to invert the Rainbow colouring, that is
> red at the bottom and blue on top. However, I can't find to work this
> out. Does anyone know how to do this?
>
> Thank you,
>  Vladimir.
>
>



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