MATLAB: How to code surf graph

graphplotsurf

X=0:0.01:0.2;

Y=0:0.01:0.2;

T=a matrix with 441*1 dimension that start from 22 to 36

Z=zeros(441,1);

Z=T;

how can i code a surf graph (X , Y,Z)?

 x = 0:0.01:0.2 ; nx = length(x) ;  
 y =  0:0.01:0.2  ; ny = length(t) ; 
 [X,Y] = meshgrid(x,y) ;
 Z = reshape(z,nx,ny) ;
 surf(X,Y,Z)

Why do your X and Y have two columns if it means nothing?

X = 0:3;
Y = 0:3;
Z = 0;
[XX, YY] = ndgrid(X, Y);
surf(XX, YY, repmat(Z, size(XX)));

You can draw it using meshgrid and surf

[X, Y] = meshgrid(linspace(-3,3));
Z = exp(-X.^2-Y.^2);
surf(X,Y,Z)
shading interp