How to apply an interpolation between different 3d surfaces?

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lei zhang
lei zhang 2017-5-10
编辑： Walter Roberson 2017-5-12
%%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?

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回答（1 个）

Stephen Jue
Stephen Jue 2017-5-12
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.

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