plot function f(x,y,z)

Hello,

I use meshgrid to get a grid of Cartesian system (x,y,z) (i.e, I get coordinate system represents by 3 matrix X,Y,Z with size nxmxl each). For each point on the grid, I calculate amplitude of electiric field E(x,y,z). I want to plot the amplitude (represents by color), as function of grid point (x,y,z). I have tried to use surf, but it has not work.

my code:

 lambda =0.3;
x = linspace(0.02,2,100);
y = linspace(0.02,2,100);
z = linspace(0.02,2,100);
[X, Y, Z] = meshgrid(x,y,z);
R = sqrt(X.^2+Y.^2+Z.^2);
tetha = acos(Z./R);
k = 2*pi/lambda;
E = real(1i*exp(1i*k*R)./(4*pi*R).*sin(tetha).*(2*sin(5*pi.*(cos(tetha)-1)))./(cos(tetha)-1));

Thank you!

[flavio tollini]

One way to visualize it can be using volumetric plots (representing 4th dimension as color intensity)

https://it.mathworks.com/help/matlab/ref/slice.html

[darova]

Look also for isosurface