Display the Vertex and Triangle labels on a meshes plot

Hello, I have a 3D sphere triangle meshes figure as follow , and I want to lable vertex and triangle numbers on the sphere triangle meshes. By doing this, I can easily know how many triangles in this 3D sphere and which three vertex numbers represent the specified mesh number. For example, when the vertex vector is (7, 9, 14), through this vertex vector, I can visulize the number of the corresponding mesh number is 7. We suppose the vertex is p and triangle is t.

Answer 1

[KSSV]

x = rand (10,1);
y = rand (10,1);
tri = delaunay (x, y);


triplot (tri, x, y);
hold on;
plot (x, y, "r*");

nodes = [1:length(x)]' ;  % nodes 
ele = [1:size(tri,1)]' ; % elements 
text(x,y,num2str(nodes),'color','b') 
text(mean(x(tri),2),mean(y(tri),2),num2str(ele),'color','k')

[Alan]

Thanks so much for the great answer. This is what I want. I modified the 2D answer into 3D and got the right answer. Thank you!