How to do a 3D plot of a grid with scalar values at every postion?

Question

Philipp 2014-4-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/125159-how-to-do-a-3d-plot-of-a-grid-with-scalar-values-at-every-postion

回答： James Ryland 2017-5-11

Hello everybody,

I have a threedimensional array that represents a grid with scalar values at every position. Apart from being a little bit bigger and with non-fictional values, something like this:

A(1,1,1) = 1;
A(2,1,1) = 2;
A(1,2,1) = 3;
A(1,1,2) = 4;
A(2,2,1) = 5;
A(2,1,2) = 6;
A(1,2,2) = 7;
A(2,2,2) = 8;

Now I want to visualize it, that there is a point at every postion with a colour depending on the value of the postion. Something like this:

http://ifit.mccode.org/images/iData_plot_3d_scatter3.png

or like this:

http://ifit.mccode.org/images/iData_plot_3d_plot3.png

Thanks in advance for your help!

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Answer 1

James Ryland 2017-5-11

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/125159-how-to-do-a-3d-plot-of-a-grid-with-scalar-values-at-every-postion#answer_266658

You might want to try this, it is a full fledged matlab application for visualizing 3D density matrices. It was designed to work with fmri and mri but it can handle arbitrary 3D arrays stored as .mat files. Right now I'm going through the matlab answers looking for questions that might be addressed by this software. Let me know if it works!

https://www.mathworks.com/matlabcentral/fileexchange/59161-volumetric-3?s_tid=srchtitle