Question

I have 3 vectors , one for angles of Phi , another for angles of Teta , and the last one a vector of points in the Y axe ,after computing the points of Teta & Phi with a function :

for teta = 0 : 10^-2 : pi/2 
    for phi = 0 : 10^-2 : pi/2 
        Y(current) = v*sin(phi)*sin(teta);  
        Teta(current) = teta;
        Phi(current) = phi;
        current = current + 1;
    end
end

How can I plot the three of them together ?

I want to plot a 3d graph with Teta & Phi as a function of Y .
I’ve tried with plot3 but the result wasn’t so satisfactory .

Thanks

Answer 1

I’m unclear about the exact goals, but here’s my interpretation:

teta = 0:.01:pi/2;
phi =0:.01:pi/2;
[t p]=meshgrid(teta,phi);
Y = v*sin(p)*sin(t);
surf(t,p,Y)
xlabel('teta')
ylabel('phi')
zlabel('1*sin(teta)*sin(phi)')

Create vectors of teta and phi values, use meshgrid to produce a matrix of t and p values, and use the vectorized form of sin (rather than a for loop). Then use surf to plot the results as a surface in 3D.