Trying to 3d plot binary cubes
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Simon Penninag
on 6 Feb 2021
Commented: Simon Penninag
on 9 Feb 2021
Hi all,
I'm trying to generate a 32x32x32 image but I cannot manage to visualize it.
I'm using matlab R2020b with the image processing toolbox, and I want to place cubes at 32x32x32 indices with a value of either 1 or 0.
Below you can see the example in 2D, first the random gaussian noise is generated in a 32x32 grid, then filtered and cut-off.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/511407/image.png)
The code I have to generate this is very straight-forward but visualizing seems to be the difficult part as this has to be a 4D plot, where 3 dimensions are simply indices and the 4th is the binary value (or greyscale). Can anyone help me plot this? I have tried things like surf, plot3, scatter3, but I couldn't get any of them to work.
I can validate that the correct data is there through montage(BW) but this gives me slices rather than a 3D image.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/511432/image.png)
%%
sigma = 2;
vertice = 32;
level = 0.5;
image = rand(vertice,vertice,vertice);
filtered = imgaussfilt3(image,sigma);
BW = imbinarize(filtered,level);
montage(BW)
2 Comments
KALYAN ACHARJYA
on 7 Feb 2021
"3d plot binary cubes"
Can you attach any reference image or replication drawing to undestand the question?
What type of the data you have, dimentions and data type?
Accepted Answer
Kiran Felix Robert
on 9 Feb 2021
Edited: Kiran Felix Robert
on 9 Feb 2021
Hi Simon,
The following is an example,
colormap gray
sigma = 2;
vertice = 32;
level = 0.5;
image = rand(vertice,vertice,vertice);
filtered = imgaussfilt3(image,sigma);
BW = double(imbinarize(filtered,level)); % Convert to double
slice(BW,1:32,1:32,1:32) % 3D Plot for 32x32x32 image
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