how to plot 4D date of 3 vectors and one 3D array

I have a 3D array (date) the three 3 different vectors ((Ny,Nx,Nz). I would like to show the data

Scatter3 can not used with negative values

and surf can not be used with vector

i do not know how i can show the data

[Dyuman Joshi]

" I would like to show the data"

In what form? A surface?

"Scatter3 can not used with negative values"

Yes, because you are using the data in the 3D array as color and size values. Those, by definition, can not be negative.

[Abdullah]

yes i a surface form

but surface can no be used with vectors,

i attached a picture of workspace and code

Answer 1

[Pratyush Swain]

Hi Abdullah,

I understand you want to show the data containing 3 different vectors and you also mentioned it contains negative numbers.I suggest using the 'vol3d' function from https://www.mathworks.com/matlabcentral/fileexchange/22940-vol3d-v2?s_tid=srchtitle.

Please find an example implementation as follows:

% Define the dimensions
Ny = 93;
Nx = 53;
Nz = 37;
% Create dummy 3D data with random values including negatives
dummyData = randn(Ny, Nx, Nz);
% Create a figure for 3D visualization
figure;
% Use vol3d to create a 3D volume visualization
h = vol3d('CData', dummyData);
% Set the view to have a better perspective
view(3);
% Adjust the aspect ratio for a better visualization
daspect([2 2 2]);
% Set appropriate axis labels and title
xlabel('X');
ylabel('Y');
zlabel('Z');
title('3D Data Visualization');

Alternatively, you can use the 'slice' function to display 2D slices of data. For more information please refer to https://www.mathworks.com/help/matlab/ref/slice.html

Hope this helps.

[Abdullah]

Hi Pratyush,

thanks for the comment.

i get the error "Unrecognized function or variable 'vol3d'

Anywho i think that man should use the "ndgrid" and "griddedInterpolant" to handle 3d-meshgrid which could be the way to the solution of my problem