How to surfplot from xyz coordinates?

Use surf to plot the following points:

(1, 1, 1), (2, 1, 2), (3, 1, 3)

(1.1, 2, 4), (2.2, 2, 5), (3.3, 2, 4)

(1.2,3,3), (2.4, 3, 2), (3.6, 3, 1)

Answer 1

[KSSV]

A = [1, 1, 1
 2, 1, 2
 3, 1, 3
 1.1, 2, 4
 2.2, 2, 5
 3.3, 2, 4
 1.2,3,3
 2.4, 3,2 
 3.6, 3, 1] ;

x = A(:,1); y = A(:,2) ; z = A(:,3) ;

dt = delaunayTriangulation(x,y) ;

tri = dt.ConnectivityList ;
trisurf(tri,x,y,z)

[Thomas Lu]

Thank you for your answer! Can it be plotted using surf only?

I guess this is the correct way though the generated figure is a bit different from the sample output. But anyway millions thanks!! :D

[KSSV]

A = [1, 1, 1
 2, 1, 2
 3, 1, 3
 1.1, 2, 4
 2.2, 2, 5
 3.3, 2, 4
 1.2,3,3
 2.4, 3,2 
 3.6, 3, 1] ;

x = A(:,1); y = A(:,2) ; z = A(:,3) ;

m = 10 ; n = 10 ;
xi = linspace(min(x),max(x),m) ;
yi = linspace(min(y),max(y),n) ;
[X,Y] = meshgrid(xi,yi) ;

F = scatteredInterpolant(x,y,z) ;
Z = F(X,Y) ;
surf(X,Y,Z) ;