4D colur plot

if true
u1=1;
u2=1;
u3=1;
u4=1;
a=0.1;
b=0.5;
g=0.25;
t=1;
A=12.*b.^2.*u3./u2;
v=(b.^2.*u1+4.*b.^4.*u3+g.*u4)./b;
x= -20:1:20;
y= -20:1:20;
z = -20:1:20;
u = A./(cosh(a.*x+b.*y+g.*z-v.*t).^2);
surf(x,y,z,u); 
colorbar
end

[David Barry]

What's the question?

[John D'Errico]

The crystal ball is foggy today. Who knows what the question is here? But the answer is probably 42.

[kalim ul-haq tariq]

I need 4D color Plot of U(x,y,z)

[Walter Roberson]

Do you mean that you want a volumetric plot with x, y, z as coordinates and u should be the color of each cuboid? If so then see vol3d in the file exchange

[kalim ul-haq tariq]

But how can apply vol3d to the given function u(x,y,z)

Answer 1

[Walter Roberson]

vol3d('cdata', u)

and also pass [-20,20] for the Xdata, Ydata, and Zdata parameters

vol3d is from the file exchange