Can somebody help me how can I draw a hemisphere with flat top?

Answer 1

[Star Strider]

One approach —

[X,Y,Z] = sphere(20);

figure
surf(X, Y, Z)
axis('equal')
grid on
title('Original Sphere')

Top = 0.85;
Ztop = interp1(Z(:,1), (1:size(Z,1)), Top)

Ztop = 17.4999

Lm = Z<=0 | Z>=Top;                                                 % Logical Matrix
Z(Lm) = NaN;

C = [0.7 0.5 0.5];                                                  

figure
surf(X, Y, Z, 'FaceColor',C, 'EdgeColor','none')
hold on
patch(X(17,:), Y(17,:), Z(17,:), C)
hold off
lightangle(gca,85,80)
lighting gouraud
axis('equal')
grid on
title('Truncated Sphere')
view(27,15)

Make appropriate changes to get the desired result.

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