how can i use 3d scatter interpolation

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young been kim
young been kim 2020-2-25
回答： Devineni Aslesha 2020-2-28
I want to interpolate 3d scatter. i have a code and want to add for interpolation.
code is down here.
<<data = importdata('20200211MOHANG_group1_densified_point_cloud.txt');
x = data(:,1);
y = data(:,2);
z = data(:,3);
scatter3(x,y,z,[],z);
xlabel('East');
ylabel('North');
zlabel('Elevation');
title('MOHANG');
colormap(jet);
colorbar('vert');
i hope to use 'interp2' and 'griddata', but i don't know how to use.
Thank you very much if you can modify that code by adding 'interp2' or 'griddata' or both.
  1 个评论
Adam
Adam 2020-2-25
I would assume interp3 is more relevant since you have 3d data to initerpolate.

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回答（1 个）

Devineni Aslesha
Devineni Aslesha 2020-2-28
Use ‘scatteredInterpolant’ function to interpolate the 3d scattered data. The 3d scattered data can also be interpolated using Delaunay triangulation of the points.
For more information, refer the following links
https://www.mathworks.com/help/matlab/ref/scatteredinterpolant.html#bvot4sx
https://www.mathworks.com/help/matlab/math/interpolating-scattered-data.html

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