
From:  Andy Buckle 
Subject:  Re: plot ellipsoidal normal 
Date:  Mon, 27 Jun 2011 14:39:33 +0100 
Hello,
I've got an ellipsoid as a 3DGraph:
#Ellipsoid
xc=0
yc=0
zc=0
xr=yr= 7000
zr=5000
n = 25
[A,B,C] = ellipsoid(xc,yc,zc,xr,yr,zr,n);
mesh(A,B,C)
Then I have a Point on the surface.:
p2= [A(17,20) B(17,20) C(17,20)];
How can I plot a line, that goes orthogonal to the surface in this point, to the middle (zaxis)?
Hope someone's got an idea.
Greetings
Clara
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