how can i represent 3d surface(conical surface) by using surface vector function
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can özbaran
on 17 Dec 2017
Commented: can özbaran
on 18 Dec 2017
xw=10;
qg=2*pi;
qw=1;
lw=0:pi/12:pi/2;
x=(xw+qw*sin(lw))*cos(qg);
y=(xw+qw*sin(lw))*sin(qg);
z= qw*(1-cos(lw));
hi everyone ,
i want to represent 3d surface by using those vector equations(equation should be represent conical surface) but i couldnt achieve yet. i use "meshgrid" and "surf" command but i couldnt do it.
Can anybody help me with these problem ?
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Accepted Answer
Roger Stafford
on 18 Dec 2017
Edited: Roger Stafford
on 18 Dec 2017
You should be using the results of meshgrid to calculate Z so that it will be a matrix, not a vector. As near as I can make out, your conical vertex is located at a point (3*cot(pi/5),0,0). Try this:
fic = pi/5;
u = linspace(0,8);
q = linspace(0,2*pi);
[U,Q] = meshgrid(u,q);
X = 3*cot(fic)-(U.*cos(Q))*cos(fic);
Y = (U.*sin(Q))*cos(fic);
Z = U*sin(fic);
surf(X,Y,Z)
I may not have guessed correctly as to your intended cone location, orientation, or angle, but this code should give some pointers about how to obtain the result you desire.
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