How to plot surface on matlab on domain?

Question

How would I plot the surface S z=(1+x^2)/(1+y^2) over the region |x|+|y|<=2 ?

I've tried numerous things, but I cannot get it so that the surface is constrained to the rhombus/square-shaped region.

I think https://stackoverflow.com/questions is more appropriate for your question — , Nov 18 '19 at 01:07
set S=0 for (x,y) s.t. |x|+|y|>2 and plot for $(x,y)\in [-2,2]\times[-2,2]$. — Dmitry, Nov 18 '19 at 13:53

score 0 · Answer 1 · answered Nov 18 '19 at 15:30

0

The NaN values are not normally plotted, thus

x=-2:0.01:2;
y=-2:0.012:2;
[X,Y]=meshgrid(x,y);

Z = (1+X.^2)./(1+Y.^2);

region = abs(X)+abs(Y)<2;

Z(~region) = NaN;
mesh(X,Y,Z);

answered Nov 18 '19 at 15:30

Arastas

1 Answers1