surfc is not working

L=4;,B=0.5;,D=0.5;,x=-2:0.02:2;,z=-2:0.02:2;
[X,Z]=meshgrid(x,z);
y1=(B/2)*(1-(2*x/L).^2).*(1-(z/D).^2);,y2=(-B/2)*(1-(2*x/L).^2).*(1-(z/D).^2);
surfc(x,z,y1);

Error using surfc
The surface Z must contain more than one row or column.

surfc(x,z,y2);

I want this, but it is not work.

Answer 1

[Dyuman Joshi]

You need to use X and Z instead of x and z for defining y1 and y2.

And you can define y2 = -y1.

L=4;B=0.5;D=0.5;x=-2:0.02:2;z=-2:0.02:2;

[X,Z]=meshgrid(x,z);

%              v             v
y1=(B/2)*(1-(2*X/L).^2).*(1-(Z/D).^2);
y2=-y1;

surfc(x,z,y1);

surfc(x,z,y2);

[현웅]

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