MATLAB: Plotting 4dimentional data error

4doptimisation

Hi all I'm trying to plot the data to see the global minimum point. I'm presented with the equation
C = (1.10471.*((Z).^2)*((X).^2))+(0.0481*(Y*Z)*14*X);
my first issue is that when I try to produce a plot of this I get the error
??? Error using ==> mtimes Inputs must be 2-D, or at least one input must be scalar.
Error in ==> Untitled4 at 5 C = (1.10471.*((Z).^2)*((X).^2))+(0.0481*(Y*Z)*14*X);
My code is x = -10:1:10; y = -10:1:10; z = -10:1:10; [X,Y,Z] = meshgrid(x,y,z); C = (1.10471.*((Z).^2)*((X).^2))+(0.0481*(Y*Z)*14*X); surf(X,Y,Z,C); hold on; axis([-10 10 -10 10 10 10]);
Many thanks

Best Answer

I changed my code to allow for this and still get the mistake!
x = -9:1:10; 
y = -9:1:10;
z = -9:1:10;
[X,Y,Z] = meshgrid(x,y,z);
C = (1.10471.*((Z).^2)*((X).^2))+(0.0481*(Y.*Z)*14*X);
surf(X,Y,Z,C);
hold on;
axis([-10 10 -10 10 10 10]);
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