Surfplot with surface color as a function of gradient (slope)

Question

Karthik Vemireddy 2018-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/414044-surfplot-with-surface-color-as-a-function-of-gradient-slope

编辑： Karthik Vemireddy 2018-8-9

Hi,

I would like to plot a surface plot, where i would like to vary the surface color based on the gradient of z instead of its magnitude. Is there a way to do it?

Thanks and Regards

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Answer 1

Karthik Vemireddy 2018-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/414044-surfplot-with-surface-color-as-a-function-of-gradient-slope#answer_332037

编辑：Karthik Vemireddy 2018-8-9

在 MATLAB Online 中打开

found the answer.

surf(X,Y,Z,C) additionally specifies the surface color.

[dfdx,dfdy] = gradient(Z);
surf(x,y,Z,sqrt(dfdx.^2 + dfdy.^2))
colorbar

does the trick...

Source and further Info can be found here

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Answer 2

Yuvaraj Venkataswamy 2018-8-8

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https://ww2.mathworks.cn/matlabcentral/answers/414044-surfplot-with-surface-color-as-a-function-of-gradient-slope#answer_332028

在 MATLAB Online 中打开

if true
  surf(X,Y,Z) 
end

surf(X,Y,Z) creates a three-dimensional surface plot. The function plots the values in matrix Z as heights above a grid in the x-y plane defined by X and Y. The function also uses Z for the color data, so color is proportional to height.