Help plotting with simple linespace and surf?

Question

Taylor Gates 2018-7-12

回答： Rik 2018-7-13

I'm trying to generate xy grid, and plot the 3D surface, z=sin(3*x).^2.*cos(4*y)^3, where x and y ranges from -pi to pi.

I'm getting an error with my SURF and can't figure out why. Here's my code so far.

x=linspace(0,2*pi); y=linspace(0, pi); [X,Y]= meshgrid(x,y); Z=sin(3*x).^2.*cos(4*y).^3 surf(X,Y,Z)

Answer 1

Rik 2018-7-13

You were very close: you only forgot to change x to X and y to Y after you added meshgrid.

x=linspace(0,2*pi);
y=linspace(0, pi);
[X,Y]= meshgrid(x,y);
Z=sin(3*X).^2.*cos(4*Y).^3;
surf(X,Y,Z)

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