Plotting 3D for three columns of data

Question

N/A 2020-2-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/503433-plotting-3d-for-three-columns-of-data

回答： Akira Agata 2020-2-4

LMS.xlsx

I want to do a 3D plot based on 3 columns of data (X,Y and Z) . X column show positions, y column show speed and z column show emissions. So the result will shows emissions as colors on x(position)-y(speed) axis. Now I have this in 3D but I want a surface output with colours as emission value.

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Answer 1

Akira Agata 2020-2-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/503433-plotting-3d-for-three-columns-of-data#answer_413621

在 MATLAB Online 中打开

How about using scatteredInterpolant function?

The following is an example:

D = xlsread('LMS.xlsx');
F = scatteredInterpolant(D(:,1),D(:,2),D(:,3));
[xq,yq] = meshgrid(linspace(0,3,20),linspace(0,45,20));
zq = F(xq,yq);
figure
surf(xq,yq,zq)
hold on
scatter3(D(:,1),D(:,2),D(:,3),'r','filled')
colorbar