Mesh : Display only nonzero values

When I draw a 3D graph with a mesh, I only want to display non-zero values. What should I do?

Please help me!

Thank you.

Answer 1

[the cyclist]

In this code, I take the first example from the documenation for mesh, and don't plot the negative values by setting them to NaN:

[X,Y] = meshgrid(-8:.5:8);
R = sqrt(X.^2 + Y.^2) + eps;
Z = sin(R)./R;

Z(Z<0) = nan; % Set negative values to NaN, so that they are not plotted

figure
mesh(X,Y,Z)

You should be able to do the equivalent thing, with

Z(Z==0) = nan;

[Joon Choi]

Wow!!

Thank you so much!!!