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Creating plans and 3D shapes with x,y,z coordinates.

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Hi everyone,
I am trying to generate different 3D shapes with matlab. The idea is to represent a coral reef (picture attached). I could like the edge of the reef to have a concave shape. To get this shape I am using the elipse equation:
t = linspace(0,pi);
xe = 4 + 4*cos(t);
yconv = 5 + 5*sin(t);
plot(yconv,xe)
axis equal
I am trying to think of a way to do it but I am not sure how to start it.
Any ideas would be great. Thanks a lot
Raphael

Accepted Answer

KALYAN ACHARJYA
KALYAN ACHARJYA on 9 Mar 2021
There may be subjective related toolboox/CAD tool to design such surfaces. You may try with surf plot, here on eexample. Here you have to find the values ​​of the z-direction array elements, such that it reflects the same plot.
a=1:10;
b=1:10;
c=[ones(4,10);1.5*ones(2,10);2*ones(4,10)];
% Add step in c data
surf(a,b,c);
grid on;
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