Matlab图形中尖峰的3-D图

Question

What would be the best way to get an image similar to the one below. Here is my data set.

xx = [50 93 32];
yy = [93 63 42];
zz = [0.443 0.743 0.302];

Where xx is Elevation(theta), yy is Azimuth(phi), and zz is HSH-MVDR. I have been doing contour3 and surf command but keep getting the error: "Z must be a matrix, not a scalar or vector." Points that are not in the dataset I want to be 0 for cordinates zz , so I am expecting only 3 points to have spikes.

Answer 1

Just make a meshgrid (making sure your x,y indices are included)

[x,y]=meshgrid(0:100,0:400);

create z

z=zeros(size(x));

and fill it

z(sub2ind(size(z),xx,yy))=zz;

then plot

surf(x,y,z) % surf(x,y,z,'linestyle','none');shading interp; ?