How to plot a 3D function?

I'm trying solve this problem for the last one year but unable to do so. Please if anyone can help me.
I roughly code a program but don't know how can I plot it.
N0=100;
r_med=[0.445 0.889 1.445 2];
sigma_g=7;
N_ang=91;
theta=[10 20 45 60 90]/180*pi;
t = [0:180]/180*pi;
phi =0:(pi/360):(pi/2);
Num_r = 50e3;
r = linspace(1,50,Num_r)./2;
col=['k' 'b' 'r' 'g' 'm'];
I0=1;Q0=1;U0=0;V0=0;
for i=1:length(theta)
hold on
for j=1:length(r_med)
[P11(j,:),P12(j,:),P33(j,:),P34(j,:),Qsca_c(j,:),~,~] = ZK_W_Cloud_PhaseFunc(N0,r_med(j),sigma_g,N_ang);
[~,indx] = find(theta(i)==t);
F(j,:)=(P11(j,indx).*I0+((P12(j,indx).*Q0.*cos(theta(i)))+(P12(j,indx).*U0.*sin(theta(i)))));
end
end

3 个评论

never compare floating point numbers for equality unless they are derived from the same array. No promises that any theta entry will equal t.
Your formula lacks any use of the parameter V0. So where is V0 employed?
These four parameters are constant. For the time being you just ignore it. The plot has nothing to do with the V0.

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