How to apply an interpolation between different 3d surfaces?

%%plot segment1
s1x=Segment1new(:,3); 
s1y=Segment1new(:,4); 
s1z=Segment1new(:,5); 

mins1x=min(s1x);
maxs1x=max(s1x);
mins1y=min(s1y);
maxs1y=max(s1y);

[S1X,S1Y]=meshgrid(mins1x:int:maxs1x,mins1y:int:maxs1y);
S1Z=griddata(s1x,s1y,s1z,S1X,S1Y);
mesh(S1X,S1Y,S1Z)

%%plot segment2
.......

There are total 5 segments of 3d surfaces in the X-Y-Z coordinate, I want to combine the 5 segments into one smooth plane.

Could anyone know how to do it?

Answer 1

[Stephen Jue]

Hi,

The interp3 may be what you are looking for. Note that the inputs to this function have to be gridded, not scattered, data.

Alternatively, if you are looking for a flat plane to fit the data, you can do a least-squares fit of the scattered data. In that case, you can refer to this MathWorks Technical Support post.