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Re: color function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg128371] Re: color function
  • From: Bob Hanlon <hanlonr357 at gmail.com>
  • Date: Wed, 10 Oct 2012 01:26:53 -0400 (EDT)
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http://reference.wolfram.com/mathematica/ref/ColorFunctionScaling.html

f[x_, y_] = Cos[x] + Cos[y];

cfun[z_] := Which[z < 1, Hue[.12], True, Hue[.63]]

ContourPlot[f[x, y], {x, -10, 10}, {y, -10, 10},
 ColorFunction -> cfun,
 ColorFunctionScaling -> False]


Bob Hanlon


On Tue, Oct 9, 2012 at 12:38 AM, Rick C <rick.cangelosi at gmail.com> wrote:
> Hello:
>
> I am working with a contour plot and I am difficulty creating a color function which, for example, will color regions on the plane Blue where if z < 1 and color regions on the plane Brown if z >= 1.  I tried
>
> ContourPlot[f[x, y], {x, -10, 10}, {y, -10, 10}, ColorFunction -> cfun]
>
> where
>
> cfun[z_] := Which[z < 1, Hue[.12], z >= 1, Hue[.63]]
>
> Thanks in advance for any help you can provide.
>



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