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drawing surfaces despite constraints

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asaf omer
asaf omer 2020-6-21
回答： Star Strider 2020-6-21
hello ,
how can i draw surfaces such as ellipsoid, sphere?
when i try to split them into 2 functions and draw them together i get the message below:
for example a sphere
x=-3:0.01:3;
y=-3:0.01:3;
[X,Y]=meshgrid(x,y);
Z=sqrt(1-X.^2+Y.^2);
grid on
mesh(X,Y,Z);
i get the message :
Error using mesh (line 71)
X, Y, Z, and C cannot be complex.
how can i draw surfaces like these despite the constraint??

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回答（1 个）

Star Strider
Star Strider 2020-6-21
Experiment with the sphere function.

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