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Re: Question about ColorFunction


"With the usual default setting ColorFunctionScaling->True, all
arguments supplied to func are scaled to lie in the range 0 to 1."

In your first example, #1 and #2 are each scaled before being fed to
Sin[#1 + #2]] & so the argument of the Sin is in the interval {0, 2}.
In your second example, the argument of Hue[#3] & is in the interval
{0, 1}. The plots would be identical if you used ColorFunctionScaling
-> False in each.


Bob Hanlon


On Wed, May 23, 2012 at 3:29 AM, Jee Lou <ywdr1987 at gmail.com> wrote:
> Anyone explain to me how ColorFunction works? Why Plot3D[Sin[x + y], {x, 0, 3}, {y, 0, 3},  ColorFunction -> (Hue[Sin[#1 + #2]] &)] and Plot3D[Sin[x + y], {x, 0, 3}, {y, 0, 3}, ColorFunction -> (Hue[#3] &)] return different color distributions?
>



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