# 3D plotting of given parametric equations

2 views (last 30 days)
Ahmet Turan on 21 Jun 2022
Commented: Ahmet Turan on 22 Jun 2022
Hi everyone, I need 3D plot of given parametric equations:
Here also R varies between [25 75], i tried to use meshgrid and ndgrid functions but had a problem using them with varying 3 variables U, V and R. How can i plot this? Also, 3D plot should look like this: (Don't mind numbers they are different in my case)

KSSV on 21 Jun 2022
m = 50 ; n = 50 ;
p = 5 ;
u = linspace(0,pi,m) ;
v = linspace(0,2*pi,n) ;
r = linspace(25,75,p) ;
[U,V,R] = meshgrid(u,v,r) ;
Z = R.*cos(U).*cos(V) ;
Y = R.*cos(U).*sin(V) ;
X = sqrt(R.^2-Z.^2-Y.^2);
figure
hold on
for i = 1:p
mesh(abs(X(:,:,i)),Y(:,:,i),Z(:,:,i))
end
view(3)
Ahmet Turan on 22 Jun 2022
I am trying to get rid of wiggly side surfaces now, any help would be appreciated.

### Categories

Find more on Surface and Mesh Plots in Help Center and File Exchange

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by