How to add 'metadata' or similar to 3d gridded matrix on Matlab

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Michael 2015-6-12

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回答： Walter Roberson 2015-6-12

I have created a 3D matrix 100x200x14

where;

100 = longitude 200 = depth 14 = time;

and it seems to be fine, however the x & y grids are still indices (e.g. 1:1:100 x 1:1:200...).

I would like to somehow add 'metadata' to the data (similar to nc files) where when plotted, the x & y axis automatically show longitude vs depth.

How can I do this using Matlab?

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Michael 2015-6-12

I forgot to mention, when plotting the 2d matrix:

imagesc(longitudevector,depthvector,3dmatrix) or (100x1,200x1,100x200) it shows me what I would like to see. However, I need to have it in data form.

Michael 2015-6-12

I have worked out how to get 3x 3d matrices using meshgrid, but now I am stuck how to combine to get one 3d matrix..

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Answer 1

Walter Roberson 2015-6-12

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https://ww2.mathworks.cn/matlabcentral/answers/223535-how-to-add-metadata-or-similar-to-3d-gridded-matrix-on-matlab#answer_182466

When you have 3 dimensions of location and 1 dimension of value, you are trying to display 4 dimensions. That's a problem. The easiest way is to encode the 4th dimension as color. However, you still have the difficulty that the outer values would hide the inner values -- can't see "inside" the cube. Sometimes transparency helps for that.

http://www.mathworks.com/matlabcentral/fileexchange/3280-voxel

http://www.mathworks.com/matlabcentral/fileexchange/30374-voxel-image

http://www.mathworks.com/matlabcentral/fileexchange/22940-vol3d-v2