How to plot surface with contour form vertices?

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I got the vertices for my 3D surface and its value that need to be contoured.

I wonder how to do a surface plot with contour?

I found a simple way to do it with a scatter plot, but I don't know how to implement the code to be surface.

x = data(:,1);
y = data(:,2);
z = data(:,3);
d = data(:,4);
marker_size = 10;
scatter3(x,y,z,marker_size,d,'filled');
view(3) 
daspect([1 1 1])
colorbar
axis tight
camlight
lighting gouraud

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Answer 1

LO 2021-7-9

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try this

https://de.mathworks.com/matlabcentral/fileexchange/5105-making-surface-plots-from-scatter-data

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Teerapong Poltue 2021-7-10

Unfortunately, it didn't work in this case since there are multiple z value in single x and y coordinate.

LO 2021-7-10

在 MATLAB Online 中打开

try to combine this

https://de.mathworks.com/help/matlab/ref/boundary.html

with this

https://de.mathworks.com/help/matlab/ref/alphashape.html

Or see also this answer by KSSV

%%structured 
xi = unique(x) ; yi = unique(y) ;
[X,Y] = meshgrid(xi,yi) ;
Z = reshape(z,size(X)) ;
figure
surf(X,Y,Z)
%%unstructured 
dt = delaunayTriangulation(x,y) ;
tri = dt.ConnectivityList ;
figure
trisurf(tri,x,y,z)

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