Let x,y,z be your data.
% Option 1 / triangles
x = rand(10,1) ; y = rand(10,1) ; z = rand(10,1) ;
dt = delaunayTriangulation(x,y) ;
tri = dt.ConnectivityList ;
trisurf(tri,x,y,z)
% option 2 / interpolation
%
m = 10; n = 10 ;
xi = linspace(min(x),max(x),m) ;
yi = linspace(min(y),max(y),n) ;
[X,Y] = meshgrid(x,y) ;
%
F = scatteredInterpolant(x,y,z) ;
Z = F(X,Y) ;
surf(X,Y,Z)
Other possibilites also there..depending on your data. google for xyz2grid.
