Plot Equation to 3d

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jack carter
jack carter 2017-3-27
回答： KSSV 2017-3-27
how to plot this function as 3d in matlab? I have tried ezplot and fplot functions, but they are not working for. Any suggestion will be quiet helpful. I want to plot the values of A, phi and R on 3d-graph. thankyou

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KSSV
KSSV 2017-3-27
N = 50 ;
B = rand ; % a constant
a =linspace(0,4,N) ;
phi = linspace(0,2,N)*pi/180 ;
[A, Phi] = meshgrid(a,phi) ;
R = A.*sin(Phi/2)./(B*cos(Phi/2).^2) ;
surf(A,Phi,R)

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